A baker makes icing for his cakes using cocoa powder and honey. The diagram below shows the relationship between the number of cups of honey and the number of cups of cocoa powder used.

Question

In the equations below, y represents cups of cocoa powder, and x represents cups of honey. Which equation represents the proportional relationship in this diagram?
A.

B.

C.

D.

Answer 1

The equation that represents the proportional relationship in the diagram is y = kx, where k is a constant.
Therefore, the correct equation is:
A) y = kx