If you do that for all of the combinations of m's and b's, you're going to get a surface. The surface is going to look something like this. I'm going to try my best to draw it. It's going to look something like this. You can almost imagine it as somewhat of a kind of a bowl. Or you can even think of it as a three-dimensional parabola, if you want to think of it that way. Instead of a parabola that just goes like this, if you were to kind of rotate it around and distort it a little bit, you would get this thing that looks kind of like a cup or a thimble or whatever.