Question

How do you graph `2x - 2y <= 72`?

Answer 1

Graph: `2x - 2y <= 72`

Explanation:

Standard form: `2x - 2y - 72 <= 0` (1).
First graph Line: 2x - 2y - 72 = 0 by its intercepts.
Make x = 0 --> y = - 36. Make y = 0 --> x = 36.
Use the origin O (0, 0) as test point. Substitute x = 0 and y = 0 into inequality (1). We get -72 < 0. It is true. Then, the area, containing O, is the solution set. Color or shade it.