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.