Question 607600: Determine whether or not the relation is a function.
{(-3, 6), (-2, 7), (-1, 8), (0, 9)}
Answer by Edwin McCravy(20056)   (Show Source):
You can put this solution on YOUR website! {(-3, 6), (-2, 7), (-1, 8), (0, 9)}
Yes it's a function because the 1st coordinates,
-3,-2,-1, and 0 are all different.
That's the requirement for a relation to be a function.
It doesn't matter whether the 2nd coordinates are all
different or not, but the 1st coordinates MUST all be
different, no two alike.
Edwin
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