And so we can look at the different points. This point right over here, when x is one and y is two, x is one, y is two. Well, the derivative, they tell us, is two times x minus y. So this is two x minus y. So it's gonna be two times one minus two, which is equal to zero. And so if the derivative there is equal to zero, then if I were to draw a line that indicates the slope at that point, well, I would draw a line with a zero slope. So it would look something like, let me draw it a little bit.