The mean and standard deviation for yearly temperature in a local town are overline X =68 degrees and S_{x} = 22.26 degrees. The mean and standard deviation for yearly rain amount in the same local town are overline y =27.2 inches and S_{y} = 8.6 inches. The correlation coefficient is r = 0.71 Find the equation for the least-squares regression line to predict amount of rain given the temperature in a local town.