Question 577703
To find equation in the form y=mx + b, we need the slope first

y=10 is a horizontal line, thus is has slope zero

a perpendicular line will have infinite slope, in other words, be a vertical line.

vertical lines are of the form x=c, where c is some constant (a number)

In this case, it is simply x=-2, which is a vertical line that goes through x=-2 and all real y values, including -15.

x=-2