Draw the graphs
a) Model the following as (weighted/unweighted, undirected/directed) graphs. Anya and Bertil are friends. Anya is also friends with Caroline and Daniel. Daniel is also friends with Erik. Bertil, Caroline and Erik are all friends of each other. Is the graph directed or undirected ? Draw the graph.
b) The DSB has the capacity of 2 trains an hour from Aalborg to København, and 2 trains an hour from Aalborg to Frederecia. There is also capacity for 3 trains an hour from København to Nykobing Falster and 1 train per hour from København to Aarhus and 5 trains per hour from Frederecia to Aarhus.