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Palmer Inedependent School District: Linear Inequalities in Two Variables [Pdf]
A set of example problems and exercises on linear inequalities in two variables. Includes how to write them using a graph or a table of values.
Washington State University
Washington State University: Math 101: Solving Linear Inequalities
This page covers topics involving linear inequalities including properties used to solve inequalities, how to write solutions, solving simple inequalities, and solving compound inequalities.
Khan Academy
Khan Academy: Compound Inequalities
Solve compound linear inequalities. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.