An engineer wants to determine how the weight of a gas-powered car, x, affects gas mileage, y.

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. Find the least-squares regression line treating weight as the explanatory variable and miles per gallon as the response variable.

Y=___x + _____