Equation of line passing through the poi...

Equation of line passing through the point `(1,2)` and perpendicular to the line `y=3x-1` is

A

1) `x+3y-7 =0`

B

2) `x+3y+7=0`

C

3) `x+3y =0`

D

4) `x-3y=0`

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The correct Answer is:

A

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