HELP!!!!!!!!!! Needed!

Question

A relation R exists such that for every input(x), the output is -x. Which statement about the relation R is correct?

A. The relation R is not a function because there is at least one output for each input.

B. The relation R is not a function because there is more than one input for each input.

C. The relation R is a function because the output is the opposite of the input.

D. The relation R is a function because for each output there is exactly one output.

Answer 1

A function is a relation between a set of inputs and outputs where each input is associated with exactly one output. In this case, the relation R takes an input x and spits out exactly one output per input. In this case, the function takes input x, and outputs the opposite of that number (-x). Therefore, C is the correct answer