The table shows the ages and prices of used cars from an online site. Write an equation that models price as a function of age.
Age of car (in years), X
1 3 5 7 9 11 13
Price (in thousands of dollars), y 20.5 18.4 16.1 13.5
11.4
8.8 6
a.
y = 1.2x + 22
b. y = -1.2x + 22
c. y = -1.2x + 20.5
d. y = -2x + 20.5