National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Using Interval Notation to Express Answers
"Dr. Math" responds to a student question about solving an inequality involving a variable in the denominator.
Oswego City School District
Regents Exam Prep Center: Multiple Choice Practice: Equations and Inequalities
Check your understanding of equations and inequalities by completing this multiple-choice practice test. You may use a graphing calculator to solve the problems and check your answers at any given time.
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Programacion Lineal
In Spanish. In this interactive unit learn how to solve graphically a system of linear inequalities with two unknowns and apply it to everyday life application.
Texas Instruments
Texas Instruments: Inequalities, They Are Not Just Linear Anymore!
Students study quadratic relationships and explore the process of graphing quadratic inequalities and systems of quadratic inequalities. They will solve these inequalities algebraically and graph them on a coordinate plane.
Texas A&M University
Wtamu Virtual Math Lab: College Algebra: Quadratic Inequalities
Using this tutorial, you'll learn two methods of solving quadratic inequalities: using a sign graph of factors and using the test-point method. Offers step-by-step written examples, and practice problems for you to complete.
Texas Instruments
Texas Instruments: How Many Solutions
Use the Inequality application to solve linear programming problems.
Sophia Learning
Sophia: Systems of Linear Inequalities in the Real World
The video lesson explores an example of how systems of linear inequalities can be applied in the real world.
Windstream
Ojk's Precalculus Study Page: Polynomial Inequalities, One Variable
This tutorial offers two methods to solve polynomial inequalities. Site includes several examples, charts, graphs, and other information for student understanding.
Texas Instruments
Texas Instruments: Maximizing Your Efforts
In this activity, students use linear programming to solve problems involving maximum and minimum values. They use the Inequality Graphing application to solve linear programming problems.