Graphing calculator : type in an equation and this program will draw your graph online on an x,y coordinate grid. Trace a graph online or use the Scientific Calculator to calculate any mathematical expression

FooPlot | Online graphing calculator and function plotter

Graphing calculator : type in an equation and this program will draw your graph online on an x,y coordinate grid. Trace a graph online or use the Scientific Calculator to calculate any mathematical expression

This applet allows you to create equivalent fractions by dividing and shading squares or circles, and match each fraction to its location on the number line.

Complete example of the two-phase method in dimensions: we put the slack variables to transform the problem into a linear programming problem with equalities and put the artificial variables in case we need an identity submatrix to start the iterations.