Graphs
of Quadratic Equations
The graph of a typical quadratic equation is shown below. You
can manipulate the mathematics by changing the values of a, h
and k, and then observing the changes in the graph.
Be sure to change just one constant at a time, so you can observe
how that one change affects the graph. And be sure to try both positive
and negative values for each of the constants.
To change the value of one of the constants:
Click on the box with the dot in it, in front of the definition of the
constant that you want to change.
Press the right arrow cursor key. (This should move
the cursor to the end of that line.)
Use theBackspace
key to delete the current value, and then type a new value.
The graph should change automatically.
To learn about other things you can do to manipulate the graph, click
here.
If the mathematics becomes totally messed up,
just click the RELOAD button on your browser.