Question

(help much needed)

Answer 1

A. It is not a function

B. It is not a function

C. It is a function

D. It is a function

Explanation:

A relation has an input value which corresponds to an output value. When each input value has one and only one output value, that relation is a function.

Answer 2

C

Explanation:

Because the input(x) does not repeat more than once