Question

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

A) 5x - 2y + 1 > 0
B) -5x + 2y + 1 > 0
C) -2x + 5y - 1 > 0
D) 2x + 5y - 1 > 0

Answer 1

Ik for s fact the awnser not a

Answer 2

B)
`-5x + 2y + 1 > 0`

Explanation:

Given point is (-2,-1)

to find out which inequality satisfies this point we plug in x and y value of the given point in each inequality

A)
`5x - 2y + 1 > 0`

x=-2 and y=-1

`5(-2) - 2(-1) + 1 > 0`

`-10+2+1>0`

`-7>0` is False

B) -5x + 2y + 1 > 0

`-5(-2) +2(-1) + 1 > 0`

`10-2+1>0`

`9>0` is True

C) -2x + 5y - 1 > 0

`-2(-2) +5(-1) -1 > 0`

`4-5-1>0`

`-2>0` is False

D) 2x + 5y - 1 > 0

`2(-2) +5(-1) - 1 > 0`

`-4-5-1>0`

`-10>0` is False