AQA D1 2009 January — Question 2

Exam BoardAQA
ModuleD1 (Decision Mathematics 1)
Year2009
SessionJanuary
TopicMatchings and Allocation

2 Six people, \(A , B , C , D , E\) and \(F\), are to be allocated to six tasks, 1, 2, 3, 4, 5 and 6. The following bipartite graph shows the tasks that each of the people is able to undertake.
\includegraphics[max width=\textwidth, alt={}, center]{6360ed01-76da-4265-8bc8-53ffe391704e-3_401_517_429_751}
\includegraphics[max width=\textwidth, alt={}, center]{6360ed01-76da-4265-8bc8-53ffe391704e-3_408_520_943_751}
  1. Represent this information in an adjacency matrix.
  2. Initially, \(B\) is assigned to task \(1 , C\) to task \(2 , D\) to task 4, and \(E\) to task 5 . Demonstrate, by using an algorithm from this initial matching, how each person can be allocated to a task.