SOLUTION: A school has just purchased new computer equipment for The graph shows the depreciation of the equipment over 5 years. The point (0, 20,000) represents the purchase price and the
Question 1176774: A school has just purchased new computer equipment for The graph shows the depreciation of the equipment over 5 years. The point (0, 20,000) represents the purchase price and the point (5, 0) represents when the equipment will be replaced. Write a linear equation in slope-intercept form that models the value of the equipment, y, x years after purchase. Use the model to predict the value of the equipment after 3 years?
From the post, the depreciation rate is = 4000 monetary units per year.
THEREFORE, the depreciation function is
y = 20000 - 4000*x,
where x is the time in years after the starting moment.
In 3 years, y = 20000 - 4000*3 = 8000.