Question

The point (-2, -1) satisfies which of the following inequalities?

1.)2x + 5y - 1 > 0
2.)-2x + 5y - 1 > 0
3.)5x - 2y + 1 > 0
4.)-5x + 2y + 1 > 0

Answer 1

Answer:

4.)-5x + 2y + 1 > 0

Step-by-step explanation:

• Substitute -2 for x and -1 for y in each inequality and see if true↓

1. 2(-2)+5(-1)>0     → -9>0      FALSE
2. -2(-2)+5(-1)>0    → -1>0       FALSE
3. 5(-2)-2(-1)>0      → -8>0      FALSE
4. -5(-2)+2(-1)+1>0 →  9>0      TRUE