An engineer wants to determine how the weight of a​ gas-powered car,​ x, affects gas​ mileage, y. The accompanying data represent the weights of various domestic cars and their miles per gallon in the city for the most recent model year. Complete parts​ (a) through​. Weight (pounds), x Miles per Gallon, y
3802 16
3957 17
2736 24
3615 19
3398 21
2985 22
3731 16
2699 24
3423 19
3703 16

​(a) Find the​ least-squares regression line treating weight as the explanatory variable and miles per gallon as the response variable.
Y= X+( )
​(Round the x coefficient to five decimal places as needed. Round the constant to one decimal place as​ needed.)