2a + b + 2c = 0 `(a, b, c in R)`, then the family of lines `ax + by +c = 0` is concurrent at

If 4a^2 + 9b^2 - c^2 + 12ab =0 , then the family of straight lines ax + by + c =0 is concurrent at

If 25a^2 + 16b^2 – 40ab – c^2 = 0 , then the family of straight line 2ax + by + c = 0 is concurrent at

If a^2+b^2-c^2-2ab = 0 , then the family of straight lines ax + by + c = 0 is concurrent at the points

If 6a^2-3b^2-c^2+7ab-ac+4bc=0 , then the family of lines ax+by+c=0 is concurrent at

If 6a^2-3b^2-c^2+7ab-ac+4bc-0 , then the family of lines ax+by+c=0 is concurrent at

If a^2-b^2-c^2-2ab=0 , then the family of lines ax+by+c=0 are concurrent at the points

If a^(2)+9b^(2)-4c^(2)=6ab, then the family of lines ax+by+c=0 are concurrent at:

If a^2+b^2-c^2-2ab = 0 , then the family of straight lines ax + by + c = 0

Statement I: The points (a,0),(0,b) and (1,1) will be collinear if 1/a+1/b=1 Statement II: If 4a^(2)+9b^(2)-c^(2)+12ab=0 , then the family of lines ax+by+c=0 is either concurrent at (2,3) or at (-2,-3). Then which of the followng is true

If 4a^2+9b^2-c^2+12ab= 0 then the family of straight lines ax + by +c=0 is concurrent at : (A) (-3,2) or (2,3) (B) (-2,3) or (2,-3) (C) (3,2) or (-3,-2) (D) (2,3) or (-2,-3)