used all my points pls help me out

Answer:
im pretty sure the one you have selected is right btw sorry if it's wrong
Step-by-step explanation:
i go to k12 too, can u help me out pls? Which table shows a proportional relationship between x and y?
x 2 3 4 5
y 7 9 11 13
x 3 7.5 15 20
y 1 2.5 4 6
x 1 2 7 8
y 0.5 1 3.5 4
x 3 6 8 10
y 12 15 18 20