NEED ASAP!!
Which tables represent constant functions?
A-x y
2 -1
2 0
2 1
B-x y
2 -3
4 -7
6 -11
C-x y
2 3
4 3
6 3
D-x y
1 3
2 12
3 27
E-x y
1 -1
2 -1
3 -1