Math Medics
S.o.s. Math: Solving Polynomial Inequalities
A short lesson on solving quadratic and polynomial inequalities.
Math Medics
S.o.s. Math: Sign of a Quadratic Function and Inequalities
This lesson discusses the sign of a quadratic function as it applies to inequalities.
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Solving Quadratic Inequalities Graphically
Eighteen problems present a variety of practice solving quadratic inequalities graphically. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View...
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Polynomial Inequality Problem
This site from Drexel University answers student question about solving polynomial inequalities, "Dr. Math" provides a fairly thorough explanation in how to solve such problems.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: A Quadratic Inequality
"Dr. Math" responds to a student question about writing solutions to quadratic inequalities in interval form.
Texas Instruments
Texas Instruments: Quadratic Inequalities
Students solve quadratic inequalities using graphs, tables, and algebraic methods.
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.
Oswego City School District
Regents Exam Prep Center: Quadratic Inequalities
The mathematics tutorial explores quadratic inequalities. The lesson consists of class notes, calculator tips, examples, and practice problems with solutions. The teacher resource includes a worksheet on matching graphs with equations.
University of Saskatchewan (Canada)
University of Saskatchewan: Inequalities
This University of Saskatchewan looks at the basic rules of solving inequalities, concentrating on inequalities with absolute values. Includes example problems and exercises with their solutions.
Other
Georgia Perimeter College: Graphing Quadratic Inequalities
This resource shows students how to graph quadratic inequalities, and gives assistance with using a graphing calculator.
Varsity Tutors
Varsity Tutors: Hotmath: Graphing Calculator Practice Problems: Quadratic Equations
Practice using your graphing calculator for solving and graphing quadratic equations. If you get stumped or if you would like to check your work, then select the View Solution button, which is located directly under each problem.
Purple Math
Purplemath: Solving Quadratic Inequalities: Concepts
Introduces a conceptual basis for solving quadratic inequalities, looking at linear inequalities and using a knowledge of what quadratic graphs look like.
Help Algebra
Help algebra.com: Polynomial and Rational Inequalities
Learn to solve inequalities and how to graph their solutions on a number line. The examples contain quadratics and rational expressions.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Solving a Logarithmic Inequality
"Dr. Math" from Drexel University responds to a student question about solving a logarithmic inequality.
Sophia Learning
Sophia: Solutions of Quadratic Inequalities: Lesson 3
This lesson provides examples of quadratic inequalities for which there is just one solution and for which there are no solutions. It is 3 of 6 in the series titled "Solutions of Quadratic Inequalities."
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Graphing Quadratic Inequalities
Fifteen problems present a variety of problems working with various aspects of solving and graphing quadratic inequalities. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the...