Question

Draw the graph of equation x + 2y - 3 = 0. From the graph, find:
(i) x₁, the value of x, when y = 3
(ii) x₂, the value of x, when y = - 2.

Answer 1

First, prepare a table as follows:

X	-1	0	1
Y	2	`(3)/(2)`	1

Thus the graph can be drawn as shown:

(i) For y = 3 we have x = - 3
(ii) For y = - 2 we have x = 7