The following answers and marking scheme to this paper are based on my solutions and have nothing to do with the official answers and marking scheme by the authority concern which I do not even know by now.
1.
(a) {(1, p), (2, r), (3, s), (4, p)} -- 1 mark
(b) many-to-one -- 1 mark
(c) {p, r, s} -- 1 mark
2.
(a) (x - 1) /2 -- 1 mark
(b) 18 -- 2 marks
3. 1/2 -- 3 marks
4.
(a) -1, 3 -- both corect -- 1 mark
(b) x = 1 -- 2 marks
5. p > 1/10 -- 3 marks
6.
(a) k = 1 -- 2 marks
(b) Show of a diagram of a graph of maximum parabola curve with y-intersect at -3,
axis of symmetry at x = 1 and the maximum point at (2, 1). -- 2 marks
7. x = -2 -- 3 marks
8. 2a/3 + b/3 -- 3 marks
9.
(a) 40 -- 2 marks
(b) 14 -- 2 marks
10.
(a) x-square -- 1 mark
(b) 0.8165 -- 2 marks
11.
(a) 2h + 1 -- 2 marks
(b) 9 - 6h -- 2 marks
12. k = 6, h = 2 -- both correct -- 3 marks
13.
(a) 8 -- 2 marks
(b) D(0, -2) -- 2 marks
14. x-square + y-square + 6x - 8y = 0 -- 3 marks
15.
(a) 3i + 4j -- 1 mark
(b) (3i + 4j)/5 -- 2 marks
16.
(a) 4b - 5a -- 2 marks
(b) 2a + 12b/5 -- 2 marks
17. 59 -- 3 marks
18. (1 - p-square)/p-square
OR (1 + p)(1 - p)/p-square
OR 1/p-square - 1 -- 2 marks
19. 3 -- 3 marks
20.
(a) 4x - 12 -- 1 mark
(b) x = 3 -- 1 mark
(c) -18 -- 1 mark
21. 4 -- 3 marks
22. 4 -- 3 marks
23. 20 -- 3 marks
24.
(a) 1/15 -- 1 mark
(b) 3/5 -- 2 marks
25.
(a) 3/8 -- 2 marks
(b) 5/16 -- 3 marks.
