Page 191 - Mathematics_Form_3

Answers

9. y Exercise 2.5

3 1.
1 y
2 f (x) = x
2 6
FOR ONLINE READING ONLY
1 5

4
-1 0 1 2 3 4 x f(x)=x -6x+5
2
3
-1
2
-2
1

10. y -1 0 1 1 2 3 4 5 6 x
-1
5
-2
4 -3

3 -4
f (x) = 5 + 2x
2
Minimum value is ()fx = - at x = 3.
4

1 1
2. y
-3 -2 -1 0 1 2 x
3 3
-1 y=x -4x+2
2
2
1 0 1 2 3 4 5 x
11.
y
Mathematics for Secondary Schools 4 4 f (x)=4 Minimum valueis y = − 2 at x = 4.4 2
-1
5
-1
-2
3
2

(a) x =
−
0.4 and x =
1
-1
−
1 and x =
(c) x =
-1 0 1 2 3 4 x (b) x = 1 and x = 3 4
3. y = (x + 4) − 2 11

184 Student\s Book Form Three

18/09/2025 10:00:09
MATHEMATIC F3 SB.indd 184 18/09/2025 10:00:09
MATHEMATIC F3 SB.indd 184