cemerlang k2 set 1
TRANSCRIPT
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1. Rosli dan Roslan telah membelanjakan RM 31 dan RM 27 masing-masing dalam hari kantin
sekolah. Rosli membeli 2 keping kupon A dan 5 keping kupon B manakala Roslan membeli 3
keping kupon A dan sekeping kupon B. Apakah harga masing-masing bagi sekeping kupon A
dan sekeping kupon B?
Rosli and Roslan spent RM 31 and RM 27 respectively in a school canteen day. Rosli bought
2 coupon A and 5 coupon B while Roslan bought 3 coupon A and a coupon B. What was the
price of a coupon A and a coupon B respectively?
[ 4 markah /marks]
2. (a) Lengkapkan pernyataan berikut dengan menggunakan pengkuantiti ‘semua’ atau
‘sebilangan’ untuk membentuk suatu pernyataan benar.
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Complete the following statements using the quantifier ‘all’ or ‘some’ to make a true
statement.
(i) ____________ gandaan 5 ialah nombor ganjil.
____________ multiples of 5 are odd numbers.
(ii) ___________ pentagon mempunyai lima sisi.
____________ pentagons have five sides.
[ 2 markah /marks]
(b) Tulis akas untuk implikasi berikut. Seterusnya, nyatakan sama ada akas tersebut adalah benar
atau palsu.
Write down the converse of the following implication. Hence, state whether the converse is
true or false.
[ 2 markah /marks]
(c) Tulis premis 1 untuk melengkapkan hujah berikut:
Write down Premise 1 to complete the following argument:
Premis/ Premise 1 : ______________________________
Premis/ Premise 2 : m < 10
Kesimpulan / Conclusion : m + 5 < 15
[ 2 markah /marks]
Jawapan/ Answer :
(a) (i)
(ii)
(b)
(c) Premis / Premise 1:
Jika hari hujan, maka mesyuarat ditangguhkan.
If raining, then meeting will be postponed.
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3. (a) Lengkapkan Jadual 3 di ruang jawapan bagi persamaan y = -x3
+ 4x + 5 dengan menulis
nilai-nilai y apabila x = -3 dan x = 4.
Complete the table in the answer space for the equation y = -x3
+ 4x + 5 by writing
down the values of y when x = -3 and x = 4.
[2 markah/marks]
(b) Dengan menggunakan skala 2 cm kepada 1 unit pada paksi-x dan 2 cm kepada 10 unit
pada paksi-y, lukis graf y = -x3
+ 4x + 5 untuk -4 ≤ x ≤ 4.
By using a scale of 2 cm to 2 units on the both axes, draw the graph of y = -x3
+ 4x + 5
for -4 ≤ x ≤ 4.
[4 markah/marks]
(c) Daripada graf anda, cari
From the graph, find
(i) nilai y apabila x = 3.5
the value of y when x = 3.5
(ii) nilai x apabila y = 15
the value of x when y = 15
[2 markah/marks]
(d) Lukis satu garis lurus yang sesuai pada graf anda untuk mencari nilai-nilai x yang
memuaskan persamaan x3 = 14x + 10 untuk -4 ≤ x ≤ 4. Nyatakan nilai-nilai x itu.
Draw a suitable straight line on the graph to find the value of x which satisfies theequation x
3 = 14x + 10 for -4 ≤ x ≤ 4. State the value of x.
[4 markah/ marks]
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Jawapan/ Answer :
3 (a)
x -4 -3 -2 -1 0 1 2 3 4
y 53 5 2 5 8 5 -10
Jadual 3
(b) Rujuk pada graf / Refer on the graph.
(c) (i) y = ___________________
(ii) x = ___________________
(d) Persamaan garis lurus/ Equation of the straight line :
x = ___________ , ____________ , _____________
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4. i) Cari matriks songsang bagi
85
21
Find the inverse matrix of
85
21
(ii) Gunakan kaedah matriks, kirakan nilai bagi k dan m yang memenuhi persamaan matriks di
bawah
Using matrices, calculate the value of k and m which satisfy the following matrix equation :
85
21
m
k =
11
1
[6 markah/ marks]
Jawapan/ Answer :
4(i)
(ii)
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5. Data di atas menunjukkan wang saku dalam RM per seminggu bagi sekumpulan 40 pelajar.
The data above shows the pocket money, in RM, per week of a group of 40 students.
10 13 18 7 19 5 21 21
18 16 18 10 15 19 20 84 14 12 6 9 20 20 15
8 10 16 11 13 17 9 11
19 15 17 12 14 11 16 17
a) Berdasarkan data tersebut, lengkapkan jadual di bawah
Based on the data, complete the table below.
[4 markah/ marks]
b) Berdasarkan jadual, Based on the table,
(i) state the modal class,
nyatakan kelas mod,
[1 markah/ marks]
(ii) calculate the mean,
hitungkan min,
data tersebut.
of the data.
[3 markah/ marks]
c) Untuk ceraian soalan ini, gunakan kertas graf
For this part of the question,
use a graph paper.
Dengan menggunakan skala 2cm kepada RM 3 pada paksi-x dan 2cm kepada 1 pelajar
pada paksi-y, lukiskan satu histogram dan poligon kekerapan pada kertas graf yang sama
By using a scale of 2 cm to RM 3 on the x-axis and 2 cm to 1 student on the y-axis, draw a
histogram and a frequency polygon on the same graph paper.
[4 markah/ marks]
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Jawapan/answer:
a)
Wang saku (RM)
Pocket money (RM)
Kekerapan
Frequency
Titik tengah
Midpoint
1 – 3 04 – 6
b) (i)
(ii)
c) Rujuk graf/ refer to the graph.
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6. (a) Rajah (i) di bawah menunjukkan sebuah prismategak dan pyramid tegak di mana
bersambung pada satah PQRS. Tapak JKLM berada pada satah mengufuk. PJKQ adalah
keratan rentas seragam bagi prisma tegak. PJ dan SM adalah sisi menegak. Tinggi pyramid
ialah 4cm. Lukis dengan skala penuh dongakan pepejal pada satah mencancang yang selari
dengan JK sebagaimana dilihat dari X.
Diagram (i) below shows a solid consisting of a right prism and a right pyramid which are
joined at the plane, PQRS. The base, JKLM, is placed on horizontal plane. PJKQ is the
uniform cross-section of the prism. PJ and SM are vertical edges. The height of the
pyramid is 4 cm. Draw the full-scale elevation of the solid on the vertical plane parallel to
JK as viewed from X.
(b) Sebuah pepejal kuboid dicantumkan dalam Rajah (i) pada satah mencancang, LMSR.
Gabungan pepejal adalah ditunjukkan dalam rajah (ii). Tapak segiempat, JKED adalah pada
satah mengufuk.
A solid cuboid is joined to the solid in Diagram (i) at the vertical plane, LMSR. Thecombined solid is shown in Diagram (ii). The square base, JKED, is on a horizontal plane.
Diagram (i)
Diagram (ii)
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Lukis dengan skala penuh
Draw the full-scale
(i) pelan gabungan pepejal itu
the plan of the combined solid,
(ii) dongakan gabungan pepejal itu pada satah mencancang yang selari dengan LE sebagaimana
dilihat dari Y.
elevation of the combined solid on a vertical plane parallel to LE as viewed from Y
Jawapan/ Answer :
6(a)
(b)(i)
(ii)
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Skema Pemarkahan :
1. Let the price of coupon A = x
Let the price of coupon B = y
2x + 5y = 31 ---------- eq 1
3x + y = 27 ------------ eq 2
eq 2 x 5 : 15x + 5y = 135 --------ep 3
ep 3 – 1 : 13x = 104
x = 8
substitute x = 8 into eq 1
2(8) + 5y = 31
y = 3
Hence, coupon A = RM 8 and coupon B = RM 3.
2. (a)(i) Sebilangan
(ii) Semua
(b) Akas : Jika mesyuarat ditangguhkan, maka hari hujan. Palsu.
(c) Premis 1 : Jika m < 10 , maka m + 5 < 15.
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4. i)
1
85
21
=
)5)(2()8(1
1
15
28
=108
1
15
28
=2
1
15
28
ii)
85
21
m
k
=
11
1
m
k =
1
85
21
11
1
3(a) 20
-43
(b) Graph
Axes drawn in correct directions with uniform scales for – 4 x 4 and – 50 y 50
All 7 points and 2* points correctly plotted or curve passes through all the points for – 4 x
4 and – 50 y 50
A smooth and continuous curve without any straight line passes through all 9
correct points using the given scale for – 4 x 4 and – 50 y 50
(c) (i) -24 y -26
(ii) – 2.6 x – 2.9
(d) Straight line y = -10 x-5 correctly drawn
(check any two points (−3,25)...(0,5)...(3,-35)
−3.5 x −3.3 , 0.7 x 0.8 , 4.0 x 4.2
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m
k =2
1
15
28
11
1
m
k =2
1
)11(1)1)(5(
)11(2)1)(8(
m
k =2
1
115
228 =
2
1
6
14 =
2
62
14
m
k =
3
7 , hence k = 7 and m = 3
5. (a)
Pocket money(RM) Frequency Midpoint
1 – 3 0 2
4 – 6 3 5
7 – 9 5 8
10 – 12 8 11
13 – 15 7 14
16 – 18 9 17
19 – 21 8 20
(b) (i) Modal class = 16 – 18
(ii) Mean =8978530
)820()917()714()811()58()35(
=40
554
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= RM 13.85
(iii)
6.
(a) (b)(i) (b)(ii)
0
1
2
3
4
5
6
7
8
9
10
3.5 6.5 9.5 12.5 15.5 18.5 21.5
F r e q u e n c y
Pocket money
3.5 6.5 9.5 12.5 15.5 18.5 21.5
V
Q/RP/S
K/LJ/M5 cm
3 cm
4 cm
G/DH/S/M
F/E
P/J
3 cm
4 cm 1 cm
2 cm
V
K
F/G
E/D
4 cm
1 cm
4 cmK/J
I/H
V
R/SQ/P
3 cm
L/M
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