ECSENOMICS Equal-Cost Lines 1-58 Figure 7A-2 A 5 3 L 1234 6789 abor 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. Equal-Cost Lines T-58 Figure 7A-2