Which of the following tables represents a linear relationship that is also proportional?

x y
0 3
3 6
6 9

x y
0 4
2 6
4 8

x y
0 0
6 3
12 6

x y
0 3
5 5
10 7

The table that represents a linear relationship that is also proportional is:

x y
0 3
3 6
6 9