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+1 vote
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in Three-dimensional geometry by (36.4k points)

Let P be the image of the point (3, 1, 7) with respect to the plane x – y + z = 3. Then the equation of the plane passing through P and containing the straight line x/1 = y/2 = z/1 is

(a) x + y – 3z = 0

(b) 3x + z = 0

(c) x – 4y + 7z = 0

(d) 2x – y = 0

1 Answer

+1 vote
by (33.1k points)
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Best answer

Answer is (c) x – 4y + 7z = 0

The mirror image of (3, 1, 7) w.r.t. the plane

x – y + z = 3 is obtained by

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