Which table does NOT represent a function?

Responses

x y
-2 -2
-1 -2
0 -2

x y
-2 2
-2 -2
-1 1

x y
-1 1
0 0
2 -2

x y
-1 -1
1 1
2 2

The second table does NOT represent a function because the input value of -2 has two different output values, 2 and -2.