But I started off saying, I want to find the slope of the line at that point. At this point right here. This is the zoomed out version of it. So what can I do? Well, I defined this second point here as just the first point, plus some h. And we have something in our toolkit called a limit. This h is just a general number. This h is just, it could be 10, it could be 2, it could be 0.02, it could be 1 times 10 to the negative 100.