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If one of the lines given by 6 x^2-x y+4 c y^2=0 is 3 x+4 y=0 , then c equals

Options

  1. A1
  2. B-1
  3. C3
  4. D-3

Correct answer

D. -3

Step-by-step solution

m₁+m₂= 1 4 c , m₁ m₂= 6 4 c and m₁=- 3 4 Hence c =-3

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