Answer
describing the possible sets of flights according to the graph given.
Work Step by Step
A possible set of flights to discontinue are:
-Boston–NewYork,
-Detroit–Boston,
-Boston–Washington,
- New York–Washington,
- New York– Chicago,
-Atlanta–Washington,
-Atlanta–Dallas,
-Atlanta–Los
-Angeles, Atlanta–St. Louis,
- St. Louis–Dallas,
-St. Louis–-Detroit,
-St. Louis–Denver,
-Dallas–San Diego,
-Dallas–LosAngeles,
-Dallas–San Francisco,-
- San Diego–Los Angeles, Los
-Angeles–San Francisco,
- San Francisco–Seattle.
