And I'm going to make a couple of columns here. And spreadsheets actually have functions that will do all of this automatically, but I really want to do it so that you could do it by hand if you had to. So I'm going to make a couple of columns here. This is going to be my x column. This is going to be my y column. This is going to be the column, I'll call this y star. This will be the y value that our line predicts based on our x value.