ECSENOMICS Price Elasticity of Demand Falls into Three Categories T26 Fi iguI (a) Elastic Demand (b) Unit-Elastic Demand ()Inelastic Demand 1.000 1.00 A 50 0.50 D Quantity(millions) Quantity(millions) Quantity (millions) McGraw-Hilllrwin CopyrightC 2001 The McGraw-Hill Companies, Inc. All rights reserved.McGraw-Hill/Irwin Copyright © 2001 The McGraw-Hill Companies, Inc. All rights reserved. Price Elasticity of Demand Falls into Three Categories T-26 Figure 4-2