Each linear function has a slope. This article teaches how to use a graph to identify the slope of a line.

### Rise over Run

To find the slope, use 2 points. Sometimes, the *x*- and *y*-values of the points will contain fractions.

Refer to the graph. Put your finger on (-2½,5). Then trace the path down and over to (3½,-6).

- How many units did you move down? 11
- How many units did you move over? 6

Rise = -11

Run = 6

Slope = rise/run = -11/6

The slope of the line is -11/6.

### How to Determine if the Slope is Positive or Negative

Trace the line from left to right. If the graph moves **upward**, then the slope is **positive**. If the graph moves **downward**, then the slope is **negative**.

Use the following pages to practice identifying the slope of a line.