Stephen Curry's free throw -Projectile - Quadratic

Goal: Move the sliders to adapt the quadratic function to fit Stephen Curry's free throw. In 2015, Curry had the best free throw percentage of 91.4%. What is the best equation to fit Stephen Curry's free throw?
1. Move the sliders (a, h & k) to create the "quadratic of best fit". What is the equation you found? 2.Describe what happens to the graph of the quadratic when you move a? Be specific. What happens when a is small, large, positive, negative, etc? 3.Describe what happens to the graph of the quadratic when you move h? Be specific. What happens when h is small, large, positive, negative, etc? 4.Describe what happens to the graph of the quadratic when you move k? Be specific. What happens when k is small, large, positive, negative, etc? 5.What would you have to in order to make the quadratic move diagonally? One step, two steps, three step?