Systems of Equations and Inequalities

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In this video, Salman Khan of Khan Academy explains systems of equations.

A helpful scientific calculator that runs in your web browser window.

This video includes sample exercises and step-by-step explanations of absolute value equations and systems of equations for the California Standards Test.

Excellent site showing examples of algebra, trig, calculus, differential equations, and linear algebra.

Need help solving systems of linear equations? In this video, a Tutor.com algebra tutor uses the substitution method to solve a system of linear equations, and shows you how to use graphing to make sure you don’t get tricked by systems of parallel lines that have no solution. You’ll graph the linear equations, find their point of intersection, solve them using substitution, and check your work to make sure it all makes sense.

Explains the difference between inconsistent, dependent and independent systems.