In the following exercise drag the point labeled "a" to see how it effects the graph of the equation y=ax2. 

In the applet below the equation is displayed as y=ax^2.

 

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This is a prototype of JavaSketchpad, a World-Wide-Web component of The Geometer's Sketchpad. Copyright ©1990-1998 by Key Curriculum Press, Inc. All rights reserved. Portions of this work were funded by the National Science Foundation (awards DMI 9561674 & 9623018).