In this chapter, you have learned that a linear function is one whose rate of change is constant. As a car ages its market value decreases, frequently at a rate that is approximately constant. This activity will allow you to create a linear model to describe the price of a used car as a function of its age.
Select a particular make and model of a car or truck that has been in production for at least 10 years (such as a Ford Mustang, a Chevy Silverado, or a Toyota Camry). Then collect prices from a newspaper or the Internet for 10 different vehicles from at least five different model years. Try to choose vehicles that are similar in terms of features; for example, if you choose a Camry, select only SE models or only LE models. Be sure to save a copy of your data from the original source, and attach it to your report.
Once you have your prices:
Problem
Find the best-fitting linear model P(t) that gives the price of a used vehicle of your model as a function of its age.
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