1.1. The graphs below show two different suggested models for estimating the value of a brand-new car costing £10 000.  $a$  is the car’s age in years and £V is the car’s value in thousands

Other than when brand new, at what age do the two models predict the same value for the car?

1.2. At what age does Model 1 predict the car will become worthless?

1.3. State a problem with using Model 1 for older cars.

1.4. State a problem with using Model 2 for very old cars.

1.5. Compare the two models for estimating a car’s value at 8 years old and higher. Suggest which model you think is more realistic, justifying your answer.