Which of these tables could represent a quadratic function?





x y
2 4
2 2
2 0
2 -2
2 -5



x y
2 4
2 2
2 0
2 2
2 5



x y
-6 4
-5 -4
0 -4
4 -4
5 -4



x y
3 16
0 7
7 0
-1 0
6 7