Given, Bubba weighed 170 pounds Due to some reasons, his weight is increasing at the rate of 0.4 pounds per month Let X be the months after he started college Y be weight of Bubba Y = aX+b is the required regression line Where a = slope =0.4 {which is increasing per every month} b=intercept=170, the original weight of Bubba Regression line Y = 0.4 X + 170