What is the reflection (image) of the point in the plane ?

Answer and explanation

Correct answer: C.

  1. Step 1: The formula for the reflection of in the plane is .
  2. Step 2: Compute the ratio: .
  3. Step 3: Compute coordinates: ; ; . The image point is .
Answer
.
Why not the others: is the foot of the perpendicular, not the reflection; uses positive sign ; makes an arithmetic error in coordinates.

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