(a) Represent the above diagram as a graph with vertices representing land masses and edges representing the bridges. Scan or photograph your graph and upload the file. (b) Is it possible to walk around the city starting and ending at the same point and crossing each bridge exactly once? Explain using graph theory why or why not you can do this.

(a) Represent the above diagram as a graph with vertices representing land masses and edges representing the bridges. Scan or photograph your graph and upload the file.

(b) Is it possible to walk around the city starting and ending at the same point and crossing each bridge exactly once? Explain using graph theory why or why not you can do this.