On a crystal clear day in Madison, Wisconsin, Jerry Seinfeld steps carefully down the street, prepared to meet his destiny.
At the door to Madison's biggest boxing ring, Barry Zeinfeld stands ready to battle Jerry for the title of best mathematical champion.
Now, this is not the first match Barry has boxed with Jerry, so Seinfeld has had many battles to analyze his opponent's punches, which always hit with a curve of y=13-10x-3x^2 at a point on the ring of (-4,5).
Using this data, Jerry can plug the values of the punch function into (f(a+h)-h)/h to find a tangent line in which he can side-step the punch. By periodically plugging in resulting in a value of 14, which can then be used to form a function of a line of movement for Jerry.