# How do you find the equations of the lines through the point (a,c) that are parallel to and perpendicular to the line y = mx + b?

##### 1 Answer
Apr 15, 2015

For a parallel line slope would remain m, and its equation in point slope for can be written y-c= m(x-a)

For a perpendicular line, slope would be $- \frac{1}{m}$ and it equation in the point slope form can be written as y-c= $- \frac{1}{m}$ (x-a)