Question

Domain: 100, 200,300, 425, 575

Range: 100, 25, 200, 50, 75

Is this a function? Why or why not

Answer 1

Answer: Yes it's a function

Reason:

There aren't any repeated items in the domain. Each x input goes to exactly one y output. This is why we have a function.

The y values can repeat, but the function wouldn't be one-to-one (i.e. injective).