Question

Which ordered pair does not satisfy the system 2x + y > 0 and -2x - y > -8?
A. (3, -2)
B. (2, 3)
C. (-1, 4)
D. (-1, -1)

Answer 1

Plug the points in to test each one. Test the first point to see what happens:

2(3) - 2 > 0
-2(3) + 2 > -8

6 - 2 > 0
4 > 0

-6 + 8 > -8
-2 > - 8

So that one satisfies the system. So that's not what we're looking for. Try another point to see whether or not it satisfies the system.