Graphing proportional relationships

Roberto is having his house painted. The job takes three days, and he pays the painter the same hourly rate every day. The cost of the job is in the chart below. |Day $1$|Day $2$|Day $3$ -:|-:|-:|-: Hours worked|$5$|$4$|$6$ Amount paid|$\$300$|$\$240$|$\$360$ **What is the painter's *unit rate* of change of dollars with respect to time; that is, how much is the painter paid for *one* hour worked? ** The unit rate of change is [[☃ math-keypad 1]] dollars per hour. **Graph the proportional relationship described above, with the $x$-coordinate representing hours worked, and the $y$-coordinate representing amount paid in dollars.** [[☃ interactive-graph 1]] Graph the relationship.