Answer:
x=8
Step-by-step explanation:
if i read your description correctly, the square root of 64 is 8.
I believe the answer is D! Hope you get it <3
Perpendicular means negative reciprocal.
4x+5y=-2
5y = -4x - 2
y = -4/5x - 2
the negative reciprocal of -4/5 is 5/4. (Negative times a negative is a positive)