KcetStraight Lines And Pair Of Straight LinesKCET 2017MCQ+1 / -02017Equation of line passing through the point $(1,2)$ and perpendicular to the line $y=3 x-1$A $x+3 y=0$B $x+3 y-7=0$C $x+3 y+7=0$D $x-3 y=0$Check AnswerClear SelectionReveal AnswerShow Explanation