f(x)= {-1 for 0 < x < 1 {-3 for 1 < x < 2 {-5 for 2 < x < 3 and so on...Graph f(x) for 0 This is a step function. The " [ " means the point IS included. Your book or teacher may put a darkened circle there. The " ) " means the point is not included. Your book or teacher may put a open circle there. The left end of each "step" below is included in the graph and the right end is not included. The "steps" keep going down to the right and never stop.Edwin