Final answer:
The equation 3x = 7y can be rearranged to find x in terms of y, which gives us option D) x/y = 7/3 as the correct statement.
Step-by-step explanation:
To solve the equation 3x = 7y, we can rearrange it to find the value of x in terms of y. Dividing both sides of the equation by 3, we get x = (7/3)y. This shows that x is directly proportional to y with a constant of 7/3. Therefore, the correct statement is option D) x/y = 7/3.