If the image of the point (-4, 2) by a line mirror is (4, -2), then what is the equation of the line mirror?

NDA 2021 Mathematics question

If the image of the point by a line mirror is , then what is the equation of the line mirror?

Answer: (B)

The mirror line is the perpendicular bisector of the segment joining a point and its image. Midpoint of and is . Slope of the segment

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Question ID VK-033551