The web links provided below is a good resource for you when doing research for homework assignments or specific class topics. The links are organized by groups for easy reference. Simply click on the link title to go to the website.
This is an online tool that lets you enter values for a, b, and c in the standard form of the quadratic equation so that you can see what the graph of the quadratic looks like. You can change the min/max x/y-values of the axis to zoom in or zoom out.