Page 188 - Mathematics_Form_3

Answers

6. (2, 4), (1, 1), (0, 0), (−1, 4) 11. y
7. (a), (b), (d) 4
8. (a) 3

9. x − 2 2
FOR ONLINE READING ONLY
f(x) = 2x + 3
1
6 4
4 2
-3 -2 -1 0 1 2 x
−4 −6
-1
−6 −8
11 9 -2
17 15
-3
10. It is a function
It is a one-to-one function
11. It is a function 12. y

12. It is a function
3
13. Not a function f(x)=x-1

14. Not a function 2

1
Exercise 2.2
x -1 0 1 2 3 x
1. f : x → + 2
5 -1
2. fx → x + 2
:
5 -2
2
3. f : x → x − 7 -3

4. :fx → ( x − ) 7 2
It is a one-to-one function
5. f : x → 8 − x
13. y
6. :fx →− Mathematics for Secondary Schools
62x
1
( ) =
7. (1) 5,f = f ( 2)- = - 1, fa 2a + 3
( ) =
f (1) 5,= f ( 2)- = - 1, fa 2a + 3 -1 0 1 2 3 x
8. (3)C = − 4, C (7) = − 36 -1

f(x)=-2
9. S(−1) = 1, S(5) = 25, S(4) = 16 -2
10. K (1) 3, K= (7) 3= It is not a one-to-one function
-3

Student\s Book Form Three 181

18/09/2025 10:00:08
MATHEMATIC F3 SB.indd 181
MATHEMATIC F3 SB.indd 181 18/09/2025 10:00:08