Video – Graphs of inequalities Watch this video to find out how to solve inequality problems on a graph and the importance of drawing straight or dashed lines to represent inequalities.

Nava Almog, Bat-Sheva Ilany, Absolute value inequalities: high school students' solutions and misconceptions, Educational Studies in Mathematics, Vol. 81, No. 3 (November 2012), pp. 347-364 ...

It is proved that the metric projection from a point onto a moving polyhedron is Lipschitz continuous with respect to the perturbations on the right-hand sides of the linear inequalities defining the ...