Question1:  Find the effect on the graph of the function y = x2 + 2 when it is changed to y = x2 - 3?

[A] The graph opens down  
[B] The graph widens      
[C] The graph narrows
[D] The vertex moves down the y axis.

Question2: The path of a basketball thrown at an angle of 450 can be modeled by y = -0.02x2 +x + 6

Question3: Write three different quadratic functions whose graphs have the line x = 4 as an axis of symmetry but have different y-intercepts

Question4: The path of a shot put released at an angle of 450 can be modeled by y = -0.01x2 + 0.7x + 6

Question5: The points (2,3) & (-4,3) lie on the graph of a quadratic equation. Explain how these points can be used to find an equation of the axis of symmetry. Then write the equation of the axis of symmetry.

Question6: Which function has the widest graph?

[A] y = 2x2
[B]y = x2 
[C]y = 0.5x2
[D]  y = -x2