Answer:
Option 3, where x = 6, y = 3; x = 10, y = 5; x = 14, y = 7
Explanation:
Step 1: Define proportional relationship
According to Khan Academy, "proportional relationships are relationships between two variables where their ratios are equivalent. Another way to think about them is that, in a proportional relationship, one variable is always a constant value times the other."
Step 2: Find the proportional relationship
Looking at option 3, we see that x is always 2 times bigger than y. This means as y increases, x is twice that amount. So if y is 10, x would be 20 and so on. Therefore, Option 3 is the correct answer.
Answer: Option 3, where x = 6, y = 3; x = 10, y = 5; x = 14, y = 7