An engineer wants to determine how the weight of a car, x, affects gas mileage, y. The following data represent the weights of various cars and their miles per gallon.
Car A B C D E
Weight (pounds), x 2750 2955 3330 3695 4040
Miles per Gallon, y 26.7 24.8 23.9 18.8 16.9
(a) Find the least-squares regression line treating weight as the explanatory variable and miles per gallon as the response variable.
Write the equation for the least-squares regression line.
y= x +
(Round the x coefficient to five decimal places as needed. Round the constant to one decimal place as needed.)