Suppose Q = 100 - P represents your demand for a good.
a) Graphically depict this demand curve.
b) What would the point elasticity of demand be at P = 75? How about at P = 100?
c) At what price would this demand by unit elastic? Show it graphically as well.
d) If your demand changes to Q = 100 Pb, at what value of b would your entire demand curve become unit elastic? Why?