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Learn about linear equations and graphs with Khan Academy's free online resources.

Learn about the slope-intercept form of linear equations and how to use it in algebra.

Learn how to find the slope of a line given two points with Khan Academy's step-by-step instructions.

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Learn what the inverse of a function is, and how to evaluate inverses of functions that are given in tables or graphs.

Learn how to read and interpret velocity vs. time graphs in physics with Khan Academy's comprehensive tutorial.

Discover how to identify, analyze, and graph proportional and non-proportional relationships through everyday examples like groceries and movie tickets. Learn to write equations and …

Learn how to interpret position vs. time graphs in physics.