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MHT CET · Maths · Three Dimensional Geometry

The co-ordinates of the point where the line joining the points \((2,-3,1)\) and \((3,-4,-5)\) and intersects the plane \(2 x+y+z=7\) are

  1. A \((-1,2,7)\)
  2. B \((1,2,3)\)
  3. C \((2,1,2)\)
  4. D \((1,-2,7)\)
Verified Solution

Answer & Solution

Correct Answer

(D) \((1,-2,7)\)

Step-by-step Solution

Detailed explanation

Equation of line: \( (x,y,z) = (2,-3,1) + t((3,-4,-5) - (2,-3,1)) = (2+t, -3-t, 1-6t) \) Substitute into plane \( 2x+y+z=7 \): \( 2(2+t) + (-3-t) + (1-6t) = 7 \)