Let's see, we're going from negative seven to negative five, and there's a couple of ways you could do it. There's the not-so-mathematically-rigorous way, where you could say, hey, look, if I start here, I can get all the way to negative five without having to pick up my pencil. If you wanted to do more rigorously, and you actually had the definition of the function, you might be able to do a proof that for any of these points over the interval, that the limit as x approaches any one of these points of f of x is equal to the value of the function at that point. It's harder to do when you only have a graph. When you only have a graph, you can only just do it by inspection and say, okay, I can go from that point to that point without picking up my pencil, so I feel pretty good about it. Now let's do another interval. Let's say the, so let me put a check mark here.