Page 157 - Mathematics

3
x = −
2 3


Thus, the x-intercept is − ,0 .


 2 
For y-intercept, set x = 0. It implies that,
y = 2(0) 3+ Tanzania Institute of Education
= 3
Thus, the y-intercept is (0, 3).

 3 
Locate the two points − 2 ,0 and (0, 3) on the xy-plane and draw a straight




line passing through these points as shown in the following figure.
y
5
y =2x + 3
4

3 B(0, 3)

2

1
3
A - , 0
2
-2 -1 0 1 2 x

-1

-2

Example 6.28

Use the x and -interceptsy to sketch the graph of 2x + 3y + 60= .

Solution
6
Given the equation 2x + 3y + = 0. Mathematics Form One
For y-intercept, set x = 0. It implies that
3y + 60=
y = − 2.

151

25/10/2024 09:52:01
Mathematics form 1.indd 151 25/10/2024 09:52:01
Mathematics form 1.indd 151