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January 27, 2015

January 27, 2015

Posted by **Helene** on Monday, December 6, 2010 at 5:19pm.

- Algebra -
**MathMate**, Monday, December 6, 2010 at 6:55pmYes, x-3 can be a function of x, for example:

f(x)=x-3

A necessary condition for a relation to be a function is the value of f(x) has to be unique for a given x.

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