The diagram below shows the relationship between the number of cans of chemical A and the number of cans of chemical B

needed to form a chemical mixture.
chemical A
chemical A
chemical A
chemical B
chemical B
chemical B
In the equations below, y represents the number of cans of chemical B, and x represents the number of cans of chemical A. Which
equation represents the proportional relationship in this diagram?

wrong

The equation that represents the proportional relationship in this diagram is:

y = 3x