SOLUTION: Determine whether the relation is a function. {(-5, -2), (-1, 2), (3, 8), (7, -1)} Function Not a function

Question 1083968: Determine whether the relation is a function.
{(-5, -2), (-1, 2), (3, 8), (7, -1)}

Function

Not a function

Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
It is a function. If the same x-value has two different y-values, it is not a function. With these problems, look at the x-values. If they are all different, it is a function. If not, the two that are the same have to have the same y-value, in other words, be the same point.
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