Standard Form of Tangent Function
This is the graph of y = atan(bx) + k. At the base level, a = 1 , b = 1 , and k = 0. 
1. What happens when a > 1?   the graph gets _____. 
2. When a is negative, the graph _______.
3. What happens when b > 1?   The graph gets _____. 
4. When b is negative, the graph _______.
5. What happens when k > 1? _______.