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MHT CET202019 Oct 2020Morning ShiftMathematicsStraight LinesActual

If the length of perpendicular drawn from the point (4,1) on the line 3 x-4 y+k=0 is 2 units, then the values of k are

Options

  1. A2,-18
  2. B-2,-18
  3. C-2,1
  4. D-2,18

Correct answer

A. 2,-18

Step-by-step solution

(D) We have, point (4,1) and 3 x-4 y+k=0 array l | 3 4-4 1+k 9+16 |=2 | 12-4+k 25 |=2 8+k =10 (8+k)=10 8+k=10 or -8-k=10 k=2 or k=-18 array

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