Question

Which relation is a function?

A. {(-5, 1), (4,9), (6, 10)}
B.{(0, 3), (0, 9), (12,-4)
C.{-2, 10), (-6, 10), (-2,3)}
D.{(5, 5), (5,9), (5, 15)}

Answer 1

A

Explanation:

A function cannot have any repeating x-coordinates; therefore A is the correct answer.