Predicting with a Regression Line, and Extrapolation Worksheet with Answer Key

What's on the worksheet

1. Find the predicted value for each regression line at the given x.
   \hat{y} = 12 + 3.5x, at x = 8\hat{y} = 140 - 6x, at x = 15\hat{y} = -25 + 4.2x, at x = 10\hat{y} = 3.6 + 0.25x, at x = 30\hat{y} = 88 - 1.5x, at x = 7.2
2. Used laptops: predict price from age and check whether the age is in the data range.
3. Taxi trips: predict the fare and decide whether the trip length is in range.
4. Florist bouquets: predict the price and decide if the number of stems is in range.
5. Umbrella shop: predict sales from rainfall and judge the prediction.
6. Labrador food: predict daily food and judge a prediction outside the weight range.
7. Priya's food truck: find a regression line from hours open and meals sold, then predict.