Posted: October 11, 2016
https://www.khanacademy.org/math/algebra/two-variable-linear-inequalities/checking-solutions-of-inequalities/e/graphically-check-solutions-to-inequalities
https://www.khanacademy.org/math/algebra-home/alg-two-var-inequalities/alg-modeling-with-linear-inequalities/e/modeling-constraints
https://www.khanacademy.org/math/algebra-home/alg-two-var-inequalities/alg-graphing-inequalities/e/graphs_of_inequalities
https://www.khanacademy.org/math/algebra-basics/alg-basics-graphing-lines-and-slope/alg-basics-graphing-inequalities/e/graphing_inequalities_2
https://www.khanacademy.org/math/algebra/two-variable-linear-inequalities/graphing-inequalities/e/graphing_inequalities_2
https://www.khanacademy.org/math/algebra/two-variable-linear-inequalities/checking-solutions-of-inequalities/e/checking-solutions-to-two-var-inequalities
https://www.khanacademy.org/math/algebra/one-variable-linear-inequalities/alg1-two-step-inequalities/e/interpretting-solving-linear-inequalities
