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Additional Mathematics Form 4 Answers
7. (a) x 0.1 0.2 0.3 0.4 0.5 0.55 9. (a) — 0.50 0.33 0.25 0.20 0.17 0.14
1
1 x
— 4.57 3.68 2.78 1.89 0.99 0.55
1
y — 0.98 1.85 2.28 2.54 2.71 2.83
y
(b) 1
y (b) 1
y
5.5 5.45
5.0 3.5 3.55
4.5 3.0
4.0 2.5
3.5 2.0
3.2
3.0 1.5
2.5 1.0
2.0 0.5
1.5 0 1 x
0.1 0.2 0.3 0.4 0.5
1.0
(c) (i) 0.28
(ii) –1.44
0.5
10. (a)
0 x x 2 1 4 9 16 25 36
0.1 0.2 0.3 0.4 0.5 0.6
xy 4.37 5.48 7.35 9.96 13.30 17.40
(c) (i) 0.18
(ii) –1.61 (b)
(iii) 0.31 xy
8. (a)
y
16
9 14
8 12
7 10
6 8
5 6
4 4
3 2
2 x 2
0
5 10 15 20 25 30 35
1
0.6 (c) (i) 0.124
0 x (ii) 16
1 2 3 4 5 6
(b) p = 1.92, q = 0.41
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