How can you tell whether an ordered pair is a solution of a linear inequality?

Question

asked Nov 9, 2019 64.5k views

1 Answer

TheDC · Answer 1 · 2019-11-14T16:19:35+0000

Hello from MrBillDoesMath!

Answer:

Suppose the ordered pair is (x.y). Substitute these values in the linear equality to see if it is true,

Example. Consider the point (7, -4). Is it a solution of the linear inequality

3x < 4y - 9? Let's check to find out.

Check:

Is 3 (7) < 4 (-4) - 9 true ?

Is 21 < -16 -9 = -25 ??

NO!

So (7,-4) is NOT a solution of the linear inequality.

Thank you,

MrB