Question

Which relationship is a function?

Answer 1

The first one (the one with the months)

Explanation:

A function is when an x value doesn't have more that one y value (y can have more than one x value, though). On the teachers and pets one, Ms. Valverde has two pets, so that doesn't count. On the shapes one, the orange square is pointing to another orange square and a triangle, so that doesn't count. The last one has 7 equaling to 12 and 13, so that doesn't count. The one with the months doesn't have any x values with more than one y value, so it is a function.

Answer 2

the first one

Explanation:

remember, in a function, x can only have one y, whereas y can have more than one x