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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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