Chapter 7 Systems of Equations and Inequalities
1. Solve Systems of Equations by Graphing
http://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/v/solving-systems-by-graphing-2
http://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/v/solving-systems-by-graphing-3
2. Solve Systems of Equations by Substitution
http://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/v/solving-systems-by-substitution-1
http://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/v/solving-systems-by-substitution-2
http://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/v/solving-systems-by-substitution-3
3. Solve Systems of Equations by Elimination
http://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/v/solving-systems-by-elimination
http://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/v/solving-systems-by-elimination-2
http://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/v/solving-systems-by-elimination-3
4. Testing solutions for Systems of Equations
5. Solve Systems of Inequalities
http://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/v/graphing-systems-of-inequalities-2
http://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/v/graphing-systems-of-inequalities-3
http://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/v/graphical-system-of-inequalities
6. Testing Solutions for Systems of Inequalities