The prediction equation y=1500x+90,000 can be used to model the value of a classic car x years after mr. alexander purchased it. which of the following is the best interpretation of the y-intercept of the linear function? a) m=1500; the value of the car increases by $1500 each year. b) m=90,000; the value of the car increases by $90,000 each year c) b=90,000; the value of the car was $90,000 when mr. alexander purchased it. d) b=1500; the value of the car was $1500 when mr. alexander purchased it.