Question

Question #e6694

Answer 1

C.

Explanation:

To know which relation is a function, make sure you know that a function means each input has exactly one output. If a relation has an input with two outputs, then it is not considered a function.

Let's consider all the choices.

A) has `(6,5)` and `(6,4)`. 6 has two outputs: 5 and 4. It's not a function.

B) has `(2,3)` and `(2,5)`. 2 has two outputs: 3 and 5. Still not a function.

C) has `(8,-2),(-2,5),(6,0)`. Each has their own inputs and outputs. Therefore, it is a function!

D) has `(-5,9)` and `(-5,3)`. Not a function.

And the relation that shows a function would be the one on letter C.