# What is the slope of any line perpendicular to the line passing through #(30,39)# and #(54,20)#?

##### 1 Answer

Oct 16, 2017

Slope of perpendicular line:

#### Explanation:

For the given points, we have

By definition the slope of the line connecting these point is

Furthermore, if a line has a slope of

Therefore any line perpendicular to the line through the given points

must have a slope of