This calculator allows you to plot multiple equations on a single graph, which can help in linear programming. All the equations are color-coded, so it is easy to distinguish them from one another.

Linear equations can be shown on a graph. Find out how to create one in this Bitesize KS3 maths video. Linear equations can be shown on a graph.

So now, I have three points. You could have graphed this with two points, but I chose three, just to give you a "heads up" on all the different ways you can do this. All you have to do is draw a line ...