Question

Solve. Assume the exercise describes a linear relationship.

The average value of a certain type of automobile was $14,040 in 1994 and depreciated to $4140 in 1999. Let y be the average value of the automobile in the year x, where x = 0 represents 1994. Write a linear equation that models the value of the automobile in terms of the year x.

Answer 1

We need slope and y-intercept. we can use the points

(0, 14040) and (5, 4140)

How do we find slope?

Answer 2

a. y = -1980x - 5760
b. y = -1980x + 4140
c. y = - 1/1980x - 4140
d. y = -1980x + 14,040

Answer 3

Are you okay with (0, 14040) and (5, 4140)?
How do we find slope?