A quadratic function can be drawn as a parabola on a graph. Find out how to plot the graph in this Bitesize KS3 maths video.

Learn how to read and plot quadratic graphs with this BBC Bitesize Maths article. For students between the ages of 11 and 14.

Plot 0.997: I call it Plot 0.997 because if you just do a google search for Plot you will never find it. Plot 0.997 is a pretty good program. It makes really nice and customizable graphs. It's free.