# What is an equation of the line that passes through the point (-9,5) and is perpendicular to the line whose equation is #y=1/2x+5#?

##### 1 Answer

#### Explanation:

Perpendicular lines

In case the slope is 0, the slope of the perpendicular line would be undefined, and vice versa. This would mean you are dealing with horizontal/vertical lines.

Given the line

Which means the line

Now that we know the slope of

To find the y-intercept, let's insert the point which we know lies on the line

Therefore, the equation of the line