The equation of the line passing through...

The equation of the line passing through the point `(1,2)` and perpendicular to the line `x+y+1=0` is

A

1) `y-x +1=0`

B

2) `y-x-1=0`

C

3) `y-x+2=0`

D

4) `y-x -2 =0`

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The correct Answer is:

B

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