# 3D and Contour Grapher

You can use the following to draw a 3D graph. You can toggle between 3D Grapher mode and contour mode using the large button at the bottom.

In **Contour Mode**, you are looking at the 3D graph from above and the colored lines represent equal heights (it's just like a contour map in geography). The green lines are lowest and the red ones are highest.

When you get into **3D Grapher mode**, enter a function of *x* and *y* **or** explore the demo ones available as links on the bottom right of the 3D Grapher screen.

If you **mouseover** the graph, it indicates *x*- and *y*- coordinates.

Flash applet by FlashandMath.

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