If the regression line for yyy on xxx is y=0.5x+3y = 0.5x + 3y=0.5x+3, what is the regression line for xxx on yyy?
x=2y−6x = 2y - 6x=2y−6
x=0.5y−3x = 0.5y - 3x=0.5y−3
x=−0.5y+3x = -0.5y + 3x=−0.5y+3
Cannot be determined without rrr.