Slope intercept

Question

write the slope intercept form if possible of the equation of the line perpendicular to the line x= -3 and containing the point (-7,-2)

Answer 1

x = -3 is the equation of a vertical line.  Therefore, a line perpendicular to that must be a horizontal line whose equation is of the form

 

y = k, where k is a constant.

 

Since it passes through (-7,-2), the equation is 

 

y = -2