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September 30, 2014

September 30, 2014

Posted by **Workshop 3** on Sunday, October 20, 2013 at 3:26pm.

Could you explain this problem? y = x^2

- Algebra -
**Steve**, Sunday, October 20, 2013 at 5:14pmif each x maps to a single y, then y is a function of x.

So, is there any value of x which produces more than one value of y?

Another useful way to decide is to graph the relation. If no vertical line intersects the graph in more than one place, then it is a function.

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