Q32 / 90 · JEE Main 2023 (13 Apr Shift 2) · Mathematics

The plane, passing through the points (0, –1, 2) and (–1, 2, 1) and parallel to the line passing through (5, 1, –7) and (1, –1, –1), also passes through the point

  • Correct answer
    A
    -2, 5, 0
  • B
    1, -2, 1
  • C
    2, 0, 1
  • D
    0, 5, -2

Solution

Let A0,-1,2 & B-1,2,1 and given plane is parallel to line passing through 5,1,-7 & 1,-1,-1

So, normal vector to the plane is given by,

n→=i^j^k^-1-02+11-21-5-1-1-1+7

⇒n→=i^j^k^-13-1-4-26=i^16-j^-10+k^14

⇒n→=16i^+10j^+14k^

∴Equation of plane

16(x – 0) + 10(y + 1) + 14 (z – 2) = 0

⇒ 8x+5y+7z=9

Now satisfying the points from option in the plane we get, 

-2,5,0 only point which satisfy the plane. 

Hence, the correct answer is option: 'A'.

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