Page 24 - PRAKTIS HEBAT ADDMATHS TG4

Additional Mathematics Form 4 Answers
(d) y = 44.67 (e) p = 2.24, q = 1.65
HOTS PRACTICES PAK-21 (f) 7.94 (g) 4.4
1. (a) xy

y Pract ice Coordinate Geometry
–20 –15 –10 –5 spm 7 Geometri Koordinat
–20

–40 PAPER 1
13
8
–60 1. 1 —, — 2
5
5
–80 2. (a) 10 units/ unit (b) (6, 8)
3. x = –1, y = 4
–100 4. (3, 4)
5. (a) (–1, 7) (b) 1 : 1
–120 22
6. 1 8, — 2
5
–141 –140 7. (a) Parallel because m = m = 3
2
1
Selari kerana m = m = 3
1
2
(b) p = –5.47, q = –141 (b) Not parallel because m ≠ m
1
(c) 1 Tidak selari kerana m ≠ m 2 2
1
y 1
8. m = m = – —
AB BC 2
x AB and BC are parallel. Hence, A, B and C are
0 1 2 3 4 5 6 collinear. / AB dan BC adalah selari. Maka, A, B dan
C adalah segaris.
–0.01
9
9. – —
–0.02 2
1
10. y = —x + 7
–0.03 2
11. (a) Perpendicular because m × m = –1
1
2
–0.04 –0.039 Berserenjang kerana m × m = –1
2
1
(b) Not perpendicular because m × m ≠ –1
1
2
–0.05 Tidak berserenjang kerana m × m ≠ –1
1 2
1
–0.06 12. –17—
2
13. y = 2x – 6
–0.07 1 15
14. y = – —x – —
–0.08 2 2
15. –1 1 – n
gradient/ kecerunan = –0.007, 16. m = ——
6
16 28
1
y-intercept/ pintasan-y = –0.039 17. (a) y = – —x + 4 (b) 1 – —, — 2
2. (a) log y = log p + (log q)x 2 5 5
10
10
10
18
3k
(b) 18. (a) p = – — (b) a = —
p
h
n
x 1 2 3 4 5 6 7 7.5 19. —
m
log y 0.56 0.78 0.99 1.21 1.43 1.77 1.87 1.97 20. (a) –4 (b) (–3, –4)
10
21. –5
(c) log y 22. 19 unit 2
10
23. n = –2, n = 22
24. 34 unit 2
2.0 1
25. —|3p – 40|
1.65 2
1.5 26. 1
27. 32 unit 2
1.0 28. n = 4, n = –5
0.9 5
29. n = 6, n = –15—
0.5 30. 34 unit 2 7
0.35
31. 71 unit 2
0 4.4 x
1 2 3 4 5 6 7
A11 © Penerbitan Pelangi Sdn. Bhd.