A contractor must haul a large amount of dirt to a work site. She collected information from two hauling companies. Ed's Excavation gives its prices in a table. Shirly's Hauling Service gives its prices in a graph.



Does the Ed's Excavation (table) represent a proportional relationship? Explain. Be sure to reference the table.

Does the Shirly's Hauling Service (graph) represent a proportional relationship? Explain. Be sure to reference the graph.

Calculate the rate of change for Ed's Hauling Service (graph). What does this represent for the company? Be sure to use context in your answer.