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.
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Solving Linear Systems by Substitution
Twenty-seven problems present a variety of practice solving linear systems by substitution. 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...
Other
University of Wisconsin: Basic Algebra
This college site offers a variety of problems and answers. Problems are divided into topic areas for easy access. Also offers quizzes with each topic.
Khan Academy
Khan Academy: Solutions of Inequalities: Algebraic
Given a two-variable linear inequality, check whether a given pair of values is a solution of the inequality. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.
Khan Academy
Khan Academy: Solutions of Inequalities Graphically
Given the graph of a two-variable linear inequality, check whether a given pair of values is a solution of the inequality. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or...
Khan Academy
Khan Academy: Graphs of Inequalities
Graph two-variable linear inequalities. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.
Other
Quick Math: Graph Equations and Inequalities
This resource is from the QuickMath website that illustrates how to graph equations, inequalities and a system.
CK-12 Foundation
Ck 12: Algebra: Linear Inequalities in Two Variables
[Free Registration/Login may be required to access all resource tools.] Graph linear inequalities to find solutions.
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.
Khan Academy
Khan Academy: Two Variable Inequalities From Their Graphs
Fit an algebraic two-variable inequality to its appropriate graph. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.