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Multiple choice

The equation to the chord of the circle $x^{2}+y^{2}=9$ whose middle point is $(1,-2)$ is

  1. $x+2y+3=0$
  2. $2x+y=0$
  3. $x-2y-5=0$
  4. $3x+y-1=0$
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B Correct answer

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