A used car salesman examined the price Y (in dollars) and the age X (in years) of used Honda CRVs. He decides to fit the least-squares regression line to the data with X as the explanatory variable and Y as the response variable. He computes the equation for the least-squares regression line,y = 20,000 - 2,500x .

Select one:

a.Car prices are increasing.

b.On average, the price of a Honda CRV increases by $2500 per year.

c.A new Honda CRV costs $20,000.

d.On average, the price of a Honda CRV decreases by $2500 per year.