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 111 Day 222 Day 333
Hours worked 555 444 666
Amount paid \$300$300dollar sign, 300 \$240$240dollar sign, 240 \$360$360dollar sign, 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
dollars per hour.
Graph the proportional relationship described above, with the xxx-coordinate representing hours worked, and the yyy-coordinate representing amount paid in dollars.