Decide whether the relation defines a function.
-{(-5, -2), (-3, -3), (2, 7), (2, 5)}
A)Function
B)Not a function

Question

Quizplus · Accepted Answer

The input value 2 has two different output values (-7 and 5), which violates the definition of a function. The x-value of 2 has two corresponding y-values, 7 and 5, which violates the rule for a function that each x-value must have only one corresponding y-value. Therefore, the relation is not a function.

Decide Whether the Relation Defines a Function