Khan Academy Static

Identifying_proportional_relationships

Learn how to tell whether two quantities are proportional by thinking about equivalent ratios and drawing graphs.

Writing_solving_proportions

Learn how to write proportions and how to solve proportions.

Graphs_of_proportional_relationships

Learn how to graph proportional relationships.

Equations_of_proportional_relationships

Learn how to write equations of proportional relationships in the form y=kx.

Rate_problems_with_fractions

Learn how to compute rates associated with ratios of fractions or decimals. For example, if you run 6.5 meters in 1.5 seconds, what is your speed in meters per second?