Practice A biologist is studying the relationship between a tree's diameter and its height. She records the following data for 7 different trees. 1.) Find the line of best fit to model the data. 2.) What is the slope? What is the y-intercept? 3.) What is the r-value? What does it mean? 4.) What is the predicted height of a tree that has a diameter 5.5 in.? 5.) Find the predicted diameter of a tree that is 25 ft. tal