Page 201 - Mathematics

9. y

4

3 3
(0, 3) Tanzania Institute of Education

2
y = x + 3
1
(-3, 0)

-4 -3 -2 -1 0 1 2 3 x
-1

-2

Exercise 6.7

5
2
1. x = 1, y = 5. x = 3, y = 1 9. x = 2, y =
3
3. x = –2, y = 7. x = 3, y = − 1 11. p = 1, q = 1

13. An orange costs Tshs 100 and mango costs Tshs 400
15. Mother is 40 years and daughter 12 years.

Revision exercise 6

 20 
1. (a) 2x − 7y = − 20, y -intercept =  0, 
 7 

(b) 5x − 9y = − 53, -intercepty =   0, 53  
 9 

 427 
(c) 66x + 186y = 427 , -intercepty =  0,  Mathematics Form One
 186 
x
(d) y = − 1, y-intercept = (0, –1)
2

195

25/10/2024 09:52:26
Mathematics form 1.indd 195 25/10/2024 09:52:26
Mathematics form 1.indd 195