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. It's where we're going from concave downwards to concave upwards, or concave upwards to concave downwards. Or another way to think about it, it's a situation where our slope goes from decreasing to increasing, or from increasing to decreasing. And when we look at it over here, it looks like, look, it looks like our slope is decreasing.