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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 \(\frac{x}{1}=\frac{y}{2}=\frac{z}{1}\) is 

(A) x + y – 3z = 0 

(B) 3x + z = 0 

(C) x – 4y + 7z = 0 

(D) 2x – y = 0

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Best answer

(C) x – 4y + 7z = 0 

Mirror image of (3, 1, 7)

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