Find an equation of the line parallel to 3x-y=6 and passing through (3,7). Express the equation in standard form. Which of the following is the equation of a line parallel to 3x-y=6 and passing through (3,7)? O A. x+3y = 16 OB. 3x-y=16 OC. x+3y=2 OD. 3x-y=2