# Mathematics Grade 12 P2 KwaZulu Natal Mock 2018 QP

> Grade 12 Mathematics Paper 2 question paper from the KwaZulu Natal Mock Exam 2018, 12 pages. Read online or download the free PDF.

- Page: https://www.hlayiso.com/library/2018-grade-12-math-trial-exam-paper-2-kzn/9f74b33f-6b43-49a6-961e-9de40300da54
- Updated: 2026-09-27
- Subject: Mathematics
- Grade: Grade 12
- Document type: Question paper
- Year: 2018
- Exam period: KwaZulu Natal Mock Exam
- Paper: 2
- Curriculum: CAPS
- Pages: 12

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## About this document

Mathematics · Grade 12 · KwaZulu Natal Mock Exam · 2018. Question paper, 12 pages. Read online or download the PDF.

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## Document text

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### Page 1

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Mathematics P2                                     1                Preparatory Examination September 2018
                                                  NSC

                              Education
                              KwaZulu-Natal Department of Education

                                        NATIONAL
                                   SENIOR CERTIFICATE

                                            GRADE 12

                                      MATHEMATICS P2

                            PREPARATORY EXAMINATION

                                      SEPTEMBER 2018

MARKS: 150

TIME:        3 hours

                 N.B. This question paper consists of 11 pages, 1 information sheet and
                                     an answer book of 23 pages.

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Mathematics P2                                      2                 Preparatory Examination September 2018
                                                   NSC

INSTRUCTIONS AND INFORMATION

Read the following instructions carefully before answering the questions.

1.      This question paper consists of 11 questions.

2.      Answer ALL questions.

3.      Clearly show ALL calculations, diagrams, graphs, et cetera that you have used in
        determining your answers.

4.      Answers only will not necessarily be awarded full marks.

5.      An approved scientific calculator (non-programmable and non-graphical) may be
        used, unless stated otherwise.

6.      If necessary, answers should be rounded off to TWO decimal places, unless stated
        otherwise.

7.      Diagrams are NOT necessarily drawn to scale.

8.      Number the answers correctly according to the numbering system used in this
        question paper. Write neatly and legibly.

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  Mathematics P2                                           3                Preparatory Examination September 2018
                                                          NSC

  QUESTION 1

  Mrs Simakuhle sells ice cream to high school learners in her neighbourhood. The sales were
  analysed over 14 randomly selected days. Each sale was compared with the recorded maximum
  on the day. This information is reflected in the table below.

Temperature
                       15      21     17     22     20     16   16    23      38     13     28     14     26        18
(in °C)
Number of ice
                       101    128    112    124     116    96   123   139    127     85    172     89     148       107
creams sold per day

  1.1       Comment on the trend of the data.                                                                (1)

  1.2       Identify the outlier in the data set.                                                            (1)

  1.3       Determine the equation of the least squares regression line excluding the outlier.               (3)

  1.4       Predict the number of ice creams sold per day if the maximum air temperature is 24°C             (2)

                                                                                                             [7]

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Mathematics P2                                       4                    Preparatory Examination September 2018
                                                    NSC

QUESTION 2

The following weights (in kgs) were recorded from 15 randomly selected weight lifters at a
certain gymnasium.

 79      80      85    88     89      89     92     94     101      105     106     107     108     112       113

2.1     Calculate the mean weight of the weight lifters.                                               (2)

2.2     Calculate the standard deviation of the recorded weights.                                      (2)

2.3     How many weight lifters would be classified in the feather weight division if you
        have to weigh less than one standard deviation from the mean weight?                           (2)

2.4     Draw a box and whisker diagram for the above data.                                             (5)

2.5     Calculate the IQR.                                                                             (2)

2.6     Comment on the spread of the data.                                                             (1)

                                                                                                       [14]

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Mathematics P2                                               5                 Preparatory Examination September 2018
                                                            NSC

QUESTION 3

In the diagram below, A (– 4; 5); C (–1; – 4) , B (4; 1) and D are the vertices of a quadrilateral.
E is the midpoint of CD and the point of intersection of the diagonals of ABCD.
AB  CED. θ is the angle of inclination of line CB.

                                                            y

                                                                           D
                               A (–4; 5)

                                                                  E
                                                                                 θ
                                                                      B (4; 1)
                                                                                          x
                                                        O

                                           C (–1; –4)

3.1     Determine

        3.1.1 the gradient of AB.                                                                           (2)

        3.1.2 the equation of AB.                                                                           (2)

        3.1.3 the equation of CD.                                                                           (3)

        3.1.4    the coordinates of E.                                                                      (5)

        3.1.5 the equation of the line parallel to BC and passing through A.                                (3)

3.2     Calculate the value of θ .                                                                          (2)

3.3     Calculate the area of ∆ AEC.                                                                        (4)
                                                                                                            [21]

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Mathematics P2                                         6                   Preparatory Examination September 2018
                                                      NSC

QUESTION 4

In the figure , the straight line y = 2x – 4 and the circle (x – 6)2 + (y + 2 )2 = 25 intersect at A and B(3; 2).
P is the centre of the circle and APC is the diameter. Also R is the x – intercept of line BC and S is the
x – intercept of AB.

                                                        y = 2x – 4
                          y

                                     B(3 ; 2)

                                                                     R
                                                                                                               x
                         O                S                      R

                                A                                                        C
                                                            P

4.1     Write down the coordinates of the centre of the circle, P.                                      (2)

4.2     Calculate the coordinates of S.                                                                 (2)

4.3     Determine the equation of the line BC.                                                          (4)

4.4     Determine the equation of the circle with centre R and passing through B and C.                 (5)

4.5     Show that AC // SR.                                                                             (5)

                                                                                                        [18]

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Mathematics P2                                        7              Preparatory Examination September 2018
                                                     NSC

QUESTION 5

5.1     Given:

        4 tan  + 5 = 0,   (0o ; 180o). Evaluate without using a calculator:

          41 cos  4 sin  150 . cos 180o                                                     (5)

5.2     Simplify, without the use of a calculator.

                 cos 99   sin 99
        5.2.1                                                                                    (6)
                 cos 33   sin 33

                 cos 140  sin 90  θ 
        5.2.2                                                                                     (5)
                   sin 130  cos  θ 

5.3     Prove the identity:

            2 sin 2 x       cos x
                                                                                                 (6)
        2 tan x  sin 2 x   sin x

5.4     Determine the general solution of the following equation:

        8 sin θ cos θ = – 2    3                                                                  (7)
                                                                                                  [29]

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Mathematics P2                                      8                 Preparatory Examination September 2018
                                                   NSC

QUESTION 6

Given: f(x) = 3 cos x and g(x) = tan 2x for x  [–45o ; 225o]

6.1     Sketch on the same set of axes the graphs of f and g. Clearly indicate any
        asymptotes using dotted lines.                                                               (8)

6.2     One solution of the equation 3 cos x = tan 2x is 34o. Use your graph, to determine
        any other solutions in the given interval.                                                   (2)
                                                                                                     [10]

QUESTION 7

In the diagram QS is a vertical pole. P and R are points in the same horizontal plane as Q
such that QP = QR. The angle of elevation of the top of the pole S from P is y.
Also SQ = h and PR̂Q = 2y.

                                                         S

                                                             h

                                                         Q
                                         y
                                 P

                                                                 2y
                                                                      R

Prove that:

         h . cos2 y
PR                                                                                                  [6]
       sin y . sin 2 y

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Mathematics P2                                      9            Preparatory Examination September 2018
                                                   NSC

QUESTION 8

In the diagram below, AOCD is a diameter of the circle with centre O and chord BE = 30 cm.
AOCD  BE and OC = 2CD.

                                                    A

                                                       ●O

                                   B                            E
                                                       C

                                                       D

Calculate with reasons:

8.1     BC                                                                                    (2)

8.2     If CD = a units, determine OC in terms of a.                                          (1)

8.3     Calculate OB.                                                                         (1)

8.4     AB (correct to one decimal place).                                                    (3)

8.5     the radius of the circle CAB.                                                         (2)
                                                                                              [9]

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Mathematics P2                                           10                         Preparatory Examination September 2018
                                                        NSC

QUESTION 9

9.1     In the diagram below, ABCD is a cyclic quadrilateral of the circle with centre O.
        Use the diagram to prove the theorem which states that B̂  D̂  180 .                                  (5)

                                                A

                                   D                        ●O
                                                                                    B

                                            C

9.2     KOL is the diameter of the circle KPNML having centre O. R is the point on chord KN, such
        that KR = RO. OR is produced to P. Chord KM bisects LK̂N and cuts LP in T.
        K1 = x.

                                                    K

                                                                                P
                                                    1 2
                                                                   R      2 1
                                                        x

                                                    1
                                                O●2               1
                                                              2       T
                                                                  3 4
                                                                                        N

                                                                          M
                                                    L

        Prove with reasons that:

        9.2.1 TK = TL                                                                                            (5)

        9.2.2 KOTP is a cyclic quadrilateral.                                                                    (3)

        9.2.3 PN // MK                                                                                           (3)
                                                                                                                 [16]

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Mathematics P2                                         11                        Preparatory Examination September 2018
                                                      NSC

QUESTION 10

In ∆ABC, R is a point on AB. S and P are points on AC such that RS // BP. P is the midpoint of AC.
                           AR     3
RC and BP intersects at T.       .
                           AB     5
                                                      A

                                                            S

                                        R                           P

                                                      T

                              B                                                      C

Calculate with reasons, the following ratios:

        AS
10.1                                                                                                              (3)
        SC

        RT
10.2                                                                                                              (2)
        TC

        ARS
10.3                                                                                                              (3)
        ABC
                                                                                                                  [8]
QUESTION 11

In the diagram alongside,
ACBT is a cyclic quadrilateral.
BT is produced to meet tangent AP on D.
CT is produced to P. AC // DB.
                                                                            A              >>                 C
                                                                                 2                    1
                                                                            1                             2
11.1    Prove that PA2 = PT . PC                (5)

11.2    If PA = 6 units, TC = 5 units
        and PT = x, show that                                           2        2
                                                                                   3
                                                                                     4
        x2 + 5x – 36 = 0.                       (2)             D 1             1 T        >>         B
                                                                            x
11.3    Calculate the length of PT.             (2)
                                                                P

11.4    Calculate the length of PD.             (3)
                                                                                                                        [12]
                                                                                          TOTAL MARKS: 150

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Mathematics P2                                                       12                     Preparatory Examination September 2018
                                                                    NSC

                                                     INFORMATION SHEET
    b  b 2  4ac
x
         2a
A  P(1  ni) A  P(1  ni)                       A  P(1  i) n                        A  P(1  i) n
Tn  a  (n  1)d                        Sn 
                                                n
                                                  2a  (n  1)d 
                                                2
Tn  ar n1                              Sn 
                                                 
                                                a r n 1  ; r 1                       S 
                                                                                                a
                                                                                                    ; 1  r  1
                                                  r 1                                         1 r

F
        
       x 1  i   1
                 n
                                                 P
                                                       x[1  (1  i)n ]
              i                                                i
                  f ( x  h)  f ( x )
f ' ( x)  lim
           h 0            h
                                                                x  x2 y1  y 2 
d  ( x 2  x1 ) 2  ( y 2  y1 ) 2                        M  1      ;          
                                                                2           2 
                                                                         y  y1
y  mx  c                    y  y1  m( x  x1 )                  m 2                         m  tan 
                                                                         x 2  x1
x  a 2   y  b2  r 2
                               a        b        c
InABC:                                     
                             sin A sin B sin C
                              a 2  b 2  c 2  2bc. cos A
                                                 1
                              area ΔABC           ab. sin C
                                                 2
sin     sin  . cos   cos .sin                             sin     sin  . cos   cos . sin 
cos     cos . cos   sin  . sin                            cos     cos . cos   sin  . sin 
         cos2   sin 2 
         
cos 2  1  2 sin 2                                     sin 2  2 sin  . cos
         2 cos2   1
         
                                                                               n        2

   x                                                                           x  x 
                                                                                   i
x                                                                     i 1
                                                                           2

       n                                                                           n
            n( A )
P(A)                                                      P(A or B) = P(A) + P(B) – P(A and B) yˆ  a  bx
            nS

                                         b
                                               x  x ( y  y )
                                                (x  x)      2

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