Question

Draw a graph of each of the following equations: x + 6y = 15

Answer 1

x + 6y = 15
⇒ x = 15 - 6y
When y = 1, x = 15 - 6(1) = 9
When y =2, x = 15 - 6(2) = 3
When y = 3, x = 15 - 6(3) = -3

x	9	3	-3
y	1	2	3

Plotting the points (9, 1), (3, 2) and (-3, 3), we get the line segment as shown in the figure.