1. Suppose you determine the estimated sample regression function to be y = 1,016.82 + 473.65 x. You would conclude that

   		y is estimated to equal 473.65 when x = 0.
   		y is estimated to increase by 473.65 for every one unit increase in x .
   		y is estimated to decrease by 473.65 for every one unit increase in x.
   		y is estimated to increase by 1,016.82 for every one unit increase in x.