Question

F to 5, h to 7, r to 2, y to 4 is it a function?

Answer 1

Yes it is a function

Explanation:

It is a function because each input in the domain maps to exactly one and only one output in the range.

If we had an input like "h" map to 7 and also map to 4 at the same time, then we wouldn't have a function.