Slope of a Perpendicular Line

Rarely Tested

Slope of a Perpendicular Line

## Formula

If a line has slope $$m$$, the slope of a perpendicular line is:

$$m'=-\frac1m$$

for:

$$m\ne0$$

## Usage

- Used to determine the slope of a line perpendicular to a given line.

No related questions available for this formula yet.

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