Annual high temperatures in a certain location have been tracked for several years. Let X represent the year and Y the high temperature. Based on the data shown below, calculate the regression line (each value to two decimal places). y 4 42.88 5 38.64 6 38.4 7 32.36 33.32 9 29.38 10 26.14 11 24 12 21.56 13 21. 12 14 17.88 15 13.74 16 15 tion Help: Video