<u><em>Answer</em></u><em>:</em>
A is the answer!
<u><em>Step-by-step explanation</em></u><em>:</em>
Trust me, I'm taking this test and got the answer wrong. But! At least I got the answer revealed for ya T-T)
Answer:

Step-by-step explanation:
Given m = - 
Given a line with slope m then the slope of a line perpendicular to it is
= -
= -
= 
23=7x
Divide both sides by 7
23/7=x
That is the only answer to this equation
<span>Perimeter is the measure of distance around a shape.
Area is a measure of the amount of surface something covers</span>