Activity: In the first lesson activity, you derived an equation to model a car wash. The equation is y = 5x - 75. In this activity, you will graph this equation. Question 1: Is it possible to graph the line that represents this equation by using two points found in the previous lesson activity, (15,0) and (0,-75)? Explain your answer.

Question 3: The general form for the equation of a line is y = mx + b. In terms of the graph, what do you think the value of m represents? What do you think the value of b represents?