# How do you find the slope of a line perpendicular to a slope 0?

##### 3 Answers

It will of the type

#### Explanation:

This appears to be a bit complicated as normally we say that if slope of a line is

For example if slope of a line is

What do we do if we have to find the slope of a line perpendicular to a line of slope

Way out is even simpler. As equation of a line whose slope is

equation of line perpendicular to it will be

The slope of a line perpendicular to a line with a slope of

#### Explanation:

The slope of a line perpendicular to a line with a slope of

A line with a slope of

For example:

The following points will result in a vertical line because the x-coordinates are the same.

The points represent a vertical line with an undefined slope.

You cannot find the slope.

You can only say that it will be a vertical line and the slope is undefined.

#### Explanation:

A line with a slope of

A line which is perpendicular to a horizontal line is a vertical line.

However, the slope of a vertical line is undefined.

So you cannot find the slope. You can only say that it will be a vertical line and the slope is undefined.

This is because for any change in

Slope =