Slope is the measure of steepness of a line. Slope is the ratio of the vertical change (rise) over the horizontal change (run).

A line segment which rises from left to right has a positive slope.

A line segment which rises from right to left has a negative slope.

The rise is positive if we count up, and negative if we count down.

The run is positive is we count right, and negative is we count left.

A horizontal line segment has a slope of 0.

A vertical line segment has an undefined slope.

The slopes of all line segments on a line are equal.

Slope Formula

m represents slope. Slope Formula is used to find the slope when given two coordinates, without graphing them.

The Formula = 

Example

Find the slope of A(-3, -8) and B(1, 5)