Which table shows a proportional relationship between x and y?

x 3 9 10 15

y 1 3 4 5

x 4 6 8 10

y 6 8 10 12

x 1 5 8 10

y 15 75 120 150

x 2 3 5 6

y 3 4 7 9

the third table listed here

Step-by-step explanation:

A "proportional" relationship has the same y/x ratio for all values of x and y.

... first table: all entries but one have y/x = 1/3. The 3rd entry has y/x = 0.4-not the same.

... second table: 6/4 ≠ 8/6

... third table: all entries reduce to y/x = 15

... fourth table: 3/2 ≠ 4/3