Posted by **ra** on Wednesday, June 24, 2009 at 6:16pm.

Every circle is a function

- math -
**Amy**, Wednesday, June 24, 2009 at 6:23pm
A function has to pass the vertical line test, which means that if you draw a vertical line, you should only touch the function once on that line. If you draw a vertical line through a circle, how many times will it touch the circle?

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