Describe the graph of the proportional relationship represented by the equation y = 2.5x.
The graph is a line that goes through points (0, 0) and (2.5, 2.5).
The graph is a line that goes through points (0, 0) and (5, 2).
The graph is a line that goes through points (0, 0) and (2.5, 1).
The graph is a line that goes through points (0, 0) and (1, 2.5).