Over one over seven. But then this part right over here is just going to be the same thing as f of three minus f of four. And then this over here, you have a seven in the denominator. So this is really just your change in x. This is your change in x, which it was by definition, or how we actually set up this average right over here. And this over here is really just your change in y. So it really is just the slope between the endpoints.