On two occasions last month, Sam Johnson rented a car on a business trip. Both times it was the same model from the same company, and both times it was in San Francisco. Sam now has to fill out an expense account form and needs to know how much he was charged per mile and the base rate.
On both occasions he dropped the car at the airport booth and just got the total charge, not the details. All Sam knows is that he was charged $210 for 625 mi on the first occasion and $133.50 for 370 mi on the second trip. Sam has called accounting to ask for help. Plot these two points on a graph and draw the line that goes through them. What question does the slope of the line answer for Sam? How does the y-intercept help? Write a memo to Sam explaining the answers to his question and how a knowledge of algebra and graphing has helped you find the answers.
2007-03-14 18:58:55 · 1 answers · asked by just meeh 1 in Science & Mathematics ➔ Mathematics
Y intercept is the base rate, the slope is the rate per mile.
Y axis is the cost and x is the miles.
2007-03-14 19:03:53 · answer #1 · answered by Celebrate Life 3 · 0⤊ 0⤋