8th Edition

ISBN: 9780357425831

Author: Johnson

Publisher: CENGAGE L

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Chapter 9.2, Problem 29E

Figure 9.7 on page 673 shows a map of the BART (Bay Area Rapid Transit) system.

On that map, different rapid transit lines are colored differently. For example, the rapid transit line between Millbrae and Pittsburg/Bay Point is colored yellow.

(a) Draw a graph of this. If two adjacent stations have three different lines connecting them, then those stations vertices should have three different edges connecting them.

(b) Is there a BART ride if the drive’s starting point must be the same as its stopping point? If your answer is “yes,” describe the drive. If your answer is “no,” explain why. Then Eulerize the graph if possible.

(c) Is there a BART ride if the drive’s starting point must be different from its stopping point? If your answer is “yes,” describe the drive. If your answer is “no,” explain why. Then Eulerize the graph if possible.

(d) Explain why the existence of a BART ride would be important to BART police, who regularly ride BART to provide security.

(e) Which type of BART ride would be more useful to BART police: the type described in part (b) or the type described in part (c)?why ?

Chapter 9.2, Problem 29E, Figure 9.7 on page 673 shows a map of the BART Bay Area Rapid Transit system. On that map, different

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Chapter 9.2, Problem 28E

Chapter 9.2, Problem 30E

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Solution Summary: The author explains that if two adjacent stations have three different lines connecting them, then the graph is made in explanation section.

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