Rate of change: graphs

Find slope from a graph using rise over run.

Lesson 7

Concept

Choose two points on the line, measure vertical change (rise) and horizontal change (run), then compute rise/run.

Try it

On a graph, points (0, -2) and (3, 4) lie on a line. Find slope.

Concept Check

Slope between (2,1) and (5,7) is:

Concept Check

A horizontal line has slope:

Slope from graph steps

These steps are out of order — can you fix them?

1.Compute rise
2.Simplify rise/run
3.Select two clear points
4.Compute run

Short Answer

What causes a common slope-sign mistake?