How do you graph x+2y=8 using intercepts?

1 Answer
Jul 6, 2017

The x-intercept is (8,0).

The y-intercept is (0,4).

Explanation:

Graph:

x+2y=8

The x-intercept is the value of x when y=0. The y-intercept is the value of y when x=0.

To get the x-intercept, substitute 0 for y.

x+(2*0)=8

x=8

The x-intercept is (8,0).

To get the y-intercept, substitute 0 for x.

0+2y=8

2y=8

Divide by 2.

y=4

The y-intercept is (0,4).

You now have two points on the line. You can plot them and then draw a straight line through the points.

graph{x+2y=8 [-12.55, 12.76, -5.42, 7.24]}