Interpolating a car's value at 5 years using a best fit line

Using extrapolation to predict a car's value at 11 years old

Why extrapolating too far with a best fit line gives wrong answers

Extrapolating boxes moved using a trend line equation

Evaluating whether extrapolation with a best fit line is reliable

Plotting student homework and grade data as a scatter plot

Drawing a best fit line through two data points

Predicting a student's mark using the best fit line equation