Which of the relations given by the following sets of ordered pairs is not a function?

select one:
a. {(52)}{(52)}
b. {(−4,−−1,−,,,10)}{(−4,−−1,−,,,10)}< br /> c. {(−8,−−6,−−4,−−2,−−1,−4)}{(−8,−−6,− −4,−−2,−−1,−4)}
d. {(−6,−3,−,,−,3)}

Question 3 (essay worth 10 points) (03.06 mc) 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. 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)