The equation c equals one fifth times s represents the proportional relationship between the number of bags of cement (c) and the number of bags of sand (s) required to make concrete. A graph of this relationship is shown.

graph with x axis labeled bags of cement and y axis labeled bags of sand, with a line from 0 comma 0 going through 15 comma 3

Which statement is true?

Bags of Sand should be on the x-axis, and Bags of Cement should be on the y-axis.
The axes are labeled correctly with the independent and dependent variables.
The graph does not show a proportional relationship.
The proportional relationship is graphed correctly.

The statement "The axes are labeled correctly with the independent and dependent variables" is true. The graph correctly shows Bags of Cement on the x-axis and Bags of Sand on the y-axis, which matches their roles as independent and dependent variables in the equation.