Question

Determine the constant rate of change (slope) of the linear function.

The car, originally valued at $12,975, has been decreasing in value at a constant rate over the past seven years. It is now worth $8600.

Explain what it means in this context.
The change in value (in dollars) will be (x) times as great as the change in the car's age (in years)

Answer 1

• y = 12975 - 625x

Explanation:

The ordered pairs are:

• (0, 12975) and (7, 8600)

Find the slope:

• (8600 - 12975)/7 = -625

It means the drop in price is $625 each year.

The equation to reflect this situation is:

• y = 12975 - 625x