The equation of the plane perpendicular to the yz-plane and passing through the points (1, - 2, 4) and (3, - 4, 5) is

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RPSC 2nd Grade Mathematics (Held on 30th June 2017) Official Paper
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  1. 2x + y - 3z + 12 = 0
  2. y + 2z - 6 = 0
  3. 3x + y - 4z + 15 = 0
  4. x - 2y + 7 = 0

Answer (Detailed Solution Below)

Option 2 : y + 2z - 6 = 0
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RPSC Senior Grade II (Paper I): Full Test 1
100 Qs. 200 Marks 120 Mins

Detailed Solution

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Concept Used:

Equation of plane in given by 
where,    is the normal vector to the plane and  is a vector of any point in the plane.

Calculation:

  Since plane parsing through  (1, -2, 4)  and  (3, -4, 5) 
  vector in the direction of the plane is:
 
and  x-axis is perpendicular to yz-plane and the direction vector of  x -axis is .
Normal vector of plane  
Let    be a point in the plane.
  plane parses through  (1, -2, 4) 
Hence, the required equation y + 2z = 6. 

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