Question

Which of the following relations is a function? A. (0, 4), (-2, 6), (0, 3), (-7, 2) B. (8, 1), (-2, 4), (0, 1), (8, 2) C. (0, 4), (-2, 2), (8, 1), (-7, 2) D. (0, 0), (-2, 3), (8, 1), (-2, 5)

Answer 1

Answer: C

Explanation:

C is a function because each of the inputs are distinct, meaning they only have one output each.

The other choices are not functions because at least one of the inputs corresponds to 2 or more outputs.