So, for example, if we take an identical change at higher pressures, we see that that produces a greater pressure difference than at lower temperatures. And that is clearly seen because this guy is much bigger than this guy. Now, what this relation doesn't tell us is the slope of the line. It would be very nice if we could somehow find the slope of the line. Unfortunately, the only way to find the slope of the line in this situation is to use calculus and find the slope of the line tangent to the curve at each point. But that's very tedious and takes a lot of work.