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AP EAMCET2008MathematicsStraight Lines

If l, m, n are in arithmetic progression, then the straight line l x+m y+n=0 will pass through the point

Options

  1. A(-1,2)
  2. B(1,-2)
  3. C(1,2)
  4. D(2,1)

Correct answer

B. (1,-2)

Step-by-step solution

Since, l, m, n are in AP. 2 m=l+n Given equation of line is l x+m y+n=0 Now, assume that the point (1,-2) satisfy the given equation. array lrr & l-2 m+n=0 & 2 m=l+n & l, m, n are in AP. array Hence, option (2) is correct.

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