Decide whether the relation defines a function.
-{(1, 1), (1, -9), (6, -7), (8, -4), (12, 5)}
A)Not a function
B)Function

Question

Quizplus · Accepted Answer

This relation is not a function because the input value of 1 has two different output values of 1 and -9. In a function, each input can only have one output value. The relation {(1, 1), (1, -9), (6, -7), (8, -4), (12, 5)} is not a function because the input value 1 is associated with two different output values (1 and -9), violating the vertical line test for a function.

Decide Whether the Relation Defines a Function