Question #e6694

1 Answer
Sep 23, 2017

Answer:

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.