To transfer the visitor's city map into a two dimensional map,
you could choose City Hall to be the origin. Its position is x = 0 m
and y = 0 m. The x-axis goes east through City Hall. The y-axis
goes north through City Hall. Then mark the distance units on
the axes and place the locations of the buildings on the graph, as
in Figure 6. The bus station is 500 m east and 750 m north of City
Hall, so its location is x = 500 m and y = 750 m.
Figure 6 What is the location of the art museum?