John has graciously decided that he will let you throw a water ballon at him if you [br]can figure out the correct postion to throw the balloon from. Use your tools to the [br]left to determine an appropriate starting point and to hit John with the balloon. [br]The sliders indicate the values from vertex form of the equation of a parabola, f(x) = a(x-h)^2 + k.[br]Drag the t slider that represents time to see if you have found an appropriate equation that will soak John!