Let me do draw, let me mark this as one, that's two, that's negative one, negative two, one, two, negative one, and negative two. And what I could do is, since this differential equation is just in terms of x's and y's and first derivatives of y with respect to x, I could go, I could sample points on the coordinate plane, I could look at the x and y coordinates, substitute them in here, figure out what the slope is going to be, and then I could visualize the slope, if a solution goes to that point, what the slope needs to be there, and I can visualize that with a line segment, a little small line segment that has the same slope as the slope in question. So, let's actually do that. Let me set up a little table here. Let me do a little table here to do a bunch of x and y values. Once again, I'm just sampling some points on the coordinate plane to be able to visualize. So, x, y, and this is dy, dx.