Precalculus #9 - Finding Slope (A Line's Average Rate of Change)

In mathematics, the slope or gradient of a line is a number that describes both the direction and the steepness of the line.

The slope of a line in the plane containing the x and y axes is generally represented by the letter m, and is defined as the change in the y coordinate divided by the corresponding change in the x coordinate, between two distinct points on the line.

The steepness, incline, or grade of a line is measured by the absolute value of the slope. A slope with a greater absolute value indicates a steeper line. The direction of a line is either increasing, decreasing, horizontal or vertical.

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