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AP EAMCET202419 May 2024Evening ShiftMathematicsStraight LinesActual

A ray of light passing through the point (2,3) reflects on Y -axis at a point P . If the reflected ray passes through the point (3,2) and P =(a, b) then 5 b=

Options

  1. Aa-5
  2. Ba-13
  3. Ca+13
  4. Da+5

Correct answer

C. a+13

Step-by-step solution

Since, P(a, b)=(0, b) From fig, now, equation of line passing through (-2,3) and (3,2) is y-3= 2-3 3+2 (x+2)=x+5 y=13 For point P, x=0, y=b 0+5 b=13 5 b=13 5 b=13+0=a+13 .

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