The cost of mailing a package is proportional to the weight of the package. The proportional relationship can be represented with the equation c = 0.8w, where c represents the total cost and w represents weight in ounces. A graph for the equation is shown.

graph with x axis labeled weight in ounces and y axis labeled cost in dollars, with a line from 0 comma 0 going through 2 comma 1.6

Which of the following statements is true about the graph shown?

The equation c = 0.8w is correctly represented by the graph.
The graph is incorrect and the line should go through the point (0.8, 1).
The x-axis and y-axis are labeled incorrectly.
The graph does not show a proportional relationship.