Describe what happens to the graph when the value of [math]a[/math] is positive and when the value of [math]a[/math] is negative.
Describe what happens to the graph when the value of [math]b[/math] is positive and when the value of [math]b[/math] is negative.
Describe what happens to the graph when the value of [math]h[/math]is positive and when the value of [math]h[/math] is negative.
Describe what happens to the graph when the value of [math]k[/math] is positive and when the value of [math]k[/math] is negative.