The twice differentiable function g and its second derivative g prime prime are graphed. And you can see it right over here. I'm actually working off of the article on Khan Academy called Justifying Using Second Derivatives. So we see our function g, and we see not its first derivative, but its second derivative here in this brown color. So then the article goes on to say, or the problem goes on to say, four students were asked to give an appropriate calculus-based justification for the fact that g has an inflection point at x equals negative two. So let's just feel good that it at least intuitively feels right. So at x equals negative two, remember what an inflection point is.