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AP EAMCET202018 Sep 2020Morning ShiftMathematicsStraight LinesActual

If ((a, 8) ) is a point on the join of ((2,5) ) and ((4,-1) ) then

Options

  1. A(a= 8 3 )
  2. B(a= 3 8 )
  3. C(a=1 )
  4. D(a=-1 )

Correct answer

C. (a=1 )

Step-by-step solution

Since points (A(a, 8), B(2,5) ) and (C(4,-1) ) are collinear, so Slope of line (A B ) and slope of line (B C ) are same ( 3 a-2 = 6 -2 a-2=-1 a=1 )

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