Education Technology

Investigating the Graphs of Quadratic Equations

Published on 06/09/2008

Activity Overview

A graph of a quadratic equation will be shown.
Also shown is the equation of the parabola in vertex form:
y = a*(x - h)^(2) + v.
And an ordered pair for one the points on the parabola will be shown on the screen.
Use the pointer tool to double click on the equation on the graph screen. This will enable you to move the cursor in the equation and then change any of the parameters a, v, h.
Press the Enter Key to see the graph of the equation with the new parameters that you chose.

Before the Activity

The student must have already studied how to graph parabolas with equations in vertex form.
The directions are included in the document.