Posted by **scooby9132002** on Tuesday, June 2, 2009 at 10:56pm.

Are all linear equations functions? Is there an instance in which a linear equation is not a function?

- math -
**Reiny**, Tuesday, June 2, 2009 at 11:02pm
A linear equation which is a vertical line in NOT a function.

e.g. x = 5 is not a function, since for the given value of x=5, you can have more than one value of y.

Any other linear equation is a function.

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