coordinate geometry

[Pratibha pallavee]

if the equation of perpendicular bisector of AB is x+2y+2=0 and B=(-1,2),then A is

(A) (-3,2)                                                      

(B) (3,-2)

(C) (-3,-2)

(D) (3,2)

[Abhilash Chandra]

c

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[Deepesh Arora]

c

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With  Regards
Deepesh Arora

[Pratibha pallavee]

how plz explain

[Abhilash Chandra]

the mid point of A and B will lie on perpendicular bisector.  So for each option find the mid point and check which1 satisfies d equation.