Let's say it's the curve y is equal to x squared, which looks something like that. And I want to find the slope. Let's say I want to find the slope at some point. And actually, before even talking about it, let's even think about what it means to find the slope of a curve. Here the slope was the same the whole time. But on a curve, your slope is changing. And just to get an intuition for what that means is, what's the slope over here?