Linear Function
(Graph) Sketch a picture of the graph if a is positive and also when a is negative.
(Direction) If a > 0 what happens to the direction of the graph? What happens when a < 0
(End Behavior) As x increases without bound, what happens to f(x) when a > 0? What happens to f(x) when a < 0?
(Additional Features) Which value of the function represents the y-intercept? Which value represents the slope (or rate of change)?