You could just set this equal to 0 and it's equal to 6. So the slope of our tangent line at the point x is equal to 3 right there is equal to 6. And another way we could write this, if we wrote that f of x is equal to x squared, we now know that the derivative, or the slope, of the tangent line of this function at the point 3. I just only evaluated it at the point 3 right there. That that is equal to 6. I haven't yet come up with a general formula for the slope of this line at any point. And I'm going to do that in the next video.