Fir Affects gas mileage. The following data represent the weights of various domestic cars and their gas mileages in the city. Weight 3735 3860 2721 3555 3319 2966 3727 2605 3473 3796 3310 (Ib) MPG 17 16 25 19 21 23 17 24 19 17 18 (2 pts) Determine which variable is likely the explanatory variable and which is the response variable. (2 pts) Compute the linear correlation coefficient between the weight of a car and its miles per gallon in the city. (2 pts) Does a linear relation exist between the weight of a car and its miles per gallon in the city? (2 pts) Find the least-squares regression line. (2 pts) Interpret the slope and y-intercept, if appropriate