So it's going to be, this is going to be the point 3 plus delta x squared. So let's figure out the slope of this secant line. Let me zoom in a little bit because that might help. So if I zoom in on just this part of the curve, it might look like that. And then I have one point here, and then I have the other point is up here. Let me see if I can draw that. That's the secant line.