Moving the sliders will change the values of the parameters "a" and "b"

1. Leaving "a" at "1", examine the impact on the graph for various values of "b".
- For what values of "b" is the graph increasing? decreasing?
- What happens when "b" is equal to "1"?
2. Next set "b" to "2" and leave it. Now examine the impact on the graph for various values of "a".
- What is the relationship between the value of "a" and the y-intercept?
- What happens when "a" is less than zero?