If you know the concept of proportionality M for two proportional quantities X and Y what equation can you write to describe the relationship?

Y = MX

Step-by-step explanation:

If two quantities X and Y maintain a proportional relationship with each other, then we can write this as Y ∝ X.

Now, converting this relation into the equation we write Y = MX ... (1), where M is a constant.

Now, from the above equation, we can say that the rate of change of Y with respect to the unit change of X is always constant.

Graphically. this equation represents the graph of a straight line with a constant slope and passing through the origin. (Answer)