Vertex form of a Quadratic Function

Explore the vertex form of a quadratic function. Move the sliders a, h and k to transform the quadratic equation.

How does changing the value of [color=#c51414]a[/color] translate the parabola? How does changing the value of [color=#c51414]h[/color] translate the parabola? How does changing the value of [color=#c51414]k[/color] translate the parabola? How does chaining the values of a, h and k effect the table of values?