And we get, we get y to the third is equal to negative one, or y is equal to negative one. Negative one to the third power is negative one. Now if y is negative one, what is x? Well, x is going to be equal to three times negative one squared. So negative one squared is just one, so x is going to be equal to three. So the point on that curve at which the tangent line is vertical is going to be the point three, negative one. And we are all done.