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September 19, 2014

September 19, 2014

Posted by **Peter** on Thursday, August 9, 2012 at 12:48am.

|y| = 4 - x

If I plug in 5, then I get -1, but it also means 1. Does that mean y has 2 values which means that it is not a function?

- Pre-Calculus -
**drwls**, Thursday, August 9, 2012 at 2:46amYou are correct.

There are two y's for each x. y is not a function of x.

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