If you're reviewing linear functions, all the online resources you need are right here—from online calculators, to step-by-step video tutorials, to worksheets with sample linear functions to practice on. They're completely free, so try one today.

This interactive online tool enables students to simultaneously visualize and manipulate three linked representations of a distance-rate-time problem. The side-by-side tool format features two airplanes (each flying at a constant speed) on merging jet routes, the corresponding distance-vs.-time graphs, and the corresponding linear equations.

The perfect study site for high school, college students and adult learners. Get help to do your homework, refresh your memory, prepare for a test, ....