# How do you find the slope that is perpendicular to the line #4x-8y=-1#?

##### 1 Answer

Jul 21, 2016

Slope is

#### Explanation:

Recall that we can perform operations on an equation as long as we do the same thing to both sides.

Add

Add

Divide both sides by 8:

This is now in standard form

Now, an important and useful fact is that the product of two perpendicular gradients is always equal to