Question

Is the relation a function? Why or why not?

{(-5, 7), (-2, -1), (0, 3), (4,7)}

Yes; two domain values exist for range value 7.

Yes; only one range value exists for each domain value.

No; the relation passes the vertical line test,

No; two domain values exist for range value 7.

Answer 1

Yes because for one Input there is only one output

Answer 2

Yes, only one range value exists for each domain value.