Classify the following relationship as a function or not a function.{(9, -18), (9, -2), (9, 15), (9, -3)}
A) a function
B) not a function
C) don't know

Question

Quizplus · Accepted Answer

A function requires that each input (or x-value) is associated with exactly one output (or y-value). In this set, the input 9 is associated with multiple outputs (-18, -2, 15, -3), so it is not a function.

Classify the Following Relationship as a Function or Not a Function.{(9