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

(a)   Y-x+1=0

(b)  Y-x-1=0

(c)   Y-x+2=0

(d)  Y-x-2=0

0 3 Views | Posted 3 months ago
Asked by Shiksha User

  • 1 Answer

  • V

    Answered by

    Vishal Baghel | Contributor-Level 10

    3 months ago

    This is a Objective Type Questions as classified in NCERT Exemplar

    Sol:

    Equation  of  any  line  perpendicular  to  the  given  line          x+y+1=0  is  x−y+k=0                                      …(i)If  eqn.(i)  is    through  the    (1,2)  then       1−2+k=0      ⇒k=1Putting  the  value  of  k  in  eqn.(i),  we  have      x−y+1=0      ⇒y−x−1=0Hence,  the  correct  option  is  (b).

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