Part A: Max rented a motorbike at $465 for 5 days. If he rents the same motorbike for a week, he has to pay a total rent of $625.

Question

Write an equation in the standard form to represent the total rent (y) that Max has to pay for renting the motorbike for x days. (4 points)

Part B: Write the equation obtained in Part A using function notation. (2 points)

Part C: Describe the steps to graph the equation obtained above on the coordinate axes. Mention the labels on the axes and the intervals. (4 points)

My answer

Part A
(5,465) (7,625)
slope = 80

y=65+80(x) plug in 5. 65+80(5)
y=65+400.
y=465.
he rents the bike for 5 days he ends up paying $465.
Therefore if he rents it for a week he would be renting it for 7 days (x)days.
y=65+80(7)
65+560.
y=625.

Part B
function notation : f(x) = 80x + 65

Part C
plot two points on the line, and "connect the dots"
x axis is days
y axis is rental in dollars

Answer 1

x-interval is 5 to 7
y-interval is 465 to 625