Answer:
x = -2
Step-by-step explanation:
m(x) = 4x+15; m(x) = 7
7= 4x+15
7-4x=15
-4x=15-7
-4x=8 / :(-4)
x= -2
I think that it is the perpendicular bisector
What's the question
4x-8+4y
blah blah blah blah blah