Question

a car loses value at a rate of $2,500 per year (slope) you purchase a car for $21,000 which equation can be used to find y its value in dollars, x years after it was purchased

Answer 1

The value decreases at the rate of 2500 means slope of equation is -2500 and present value is 21000 so y intercept for the line is 21000.

Determine the equation for the car value after x years.

$y=-2500x+21000$

So answer is -2500x + 21000.