I wonder if there is any relationship between the amount of water in my bathtub and the temperature of my coffee. Generally, most people say these have nothing to do with each other. But if I define the variable Y to be the product of the amount of water in my bathtub with the temperature of my coffee, then I have $Y=QT$, where $Q$ is the amount of water in my bathtub and $T$ is the temperature of my coffee. So judging from this formula, I think that the temperature of my coffee should be inversely proportional to the amount of water in my bathtub. —
WillO Jul 16 at 13:05