Page 18 - Modul A+1 Matematik Tingkatan 5

BAB 1 7. A Apabila/When y = 8, x = 25,
k
Q ∝ M dan/and Q ∝ 1 8 =
2
Soalan Berformat SPM H 25
Kertas 1/Paper 1 ∴ Q ∝ M 2 8 = k 5
1. B H k = 40
R ∝ T 2 8. B 40
R = kT 2 p ∝ r y =
2. A x p = kr x 40
w ∝ p Apabila/When p = 2, r = 7, Apabila/When x = 144, y = 144
q y 2 = k(7)
p 3 = 40
w ∝ 2 12
q k = 7
p 3 = 10
w ∝ 2r 3
1 ∴ p =
q 2 7 13. C z 2
∴ x = 3, y = 1 9. C x ∝ y
2
3. D v ∝ 1 x = kz 2
x ∝ 1 y y
1 k
y 3 v = Apabila/When x = 36, y = 2, z = 3,
k y k(3) 2
x = 1 36 =
y 3 Apabila/When v = 8, y = 9, k = 8 2
Apabila/When x = 10, y = 1, 8 = k 8z 2
10 = k 1 k 9 x = y
1 3 8 = 3
k = 10 k = 24 Apabila/When x = m, y = n, z = 10,
2
8(10)
x = 10 1 v = 24 m = n
y 3 y mn = 800
Apabila/When x = 5, y = m, Apabila/When y = 49, v = 24 = 24 14. A
10 49 7 1
5 = 1 y ∝
m 3 10. A 2x – 3
k
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3
m 3 = 2 v ∝ r y = 2x – 3
m = 2 3 t 3
= 8 v = kr Apabila/When y = 10, x = 2,
k
4. C t 10 = 2(2) – 3
1
2
V U = k Apabila/When v = 1 , r = 3, t = 6,
k 2 k = 10
U = 3 k(3) 3 10
V 2 = ∴ y = 2x – 3
U ∝ 1 2 6
V 2 3 9k Apabila/When y = –2,
∴ U berubah secara songsang dengan 2 = 2 10
kuasa dua V. k = 1 –2 = 2x – 3
U varies inversely as the square of V. 3 – 4x + 6 = 10
5. D v = r 3 – 4x = 4
s ∝ 1 3t x = –1
v 4 3
k Apabila/When r = 4, t = 8, v = 3(8) 15. C
s =
v = 8 P 18 25 18
Apabila/When s = 15, v = 4, 3
k 11. B Q 1 2 4
15 =
4 x 2 3 4 R 6 10 12
k = 60
60 y 8 18 32 PQ 1 1 1
s = v y R 2 2 2 2
Apabila/When s = 5, 5 = 60 x 2 2 2 2
v PQ 1
v = 12 y R 2 = 2
6. C x 2 = 2 P = R 2
x 1 2 3 4 y = 2x 2 2Q
2
y 3 12 27 48 ∴ y ∝ x 2 ∴ P ∝ R Q
y 12. C
x 2 3 3 3 3 y ∝ 1 16. A
y x t ∝ 1
2 = 3 y
x k
y = 3x 2 y = x t = k
∴ y ∝ x 2 y
J-1

Jaw Guru ModulA+ Matematik Tg5.indd 1 21/10/2021 4:15 PM