Geometry

Question Analysis：
This question tests direct application of the coordinate swap rule under reflection across y = x.

Key Concept Explanation:
For reflection across y = x, use (x, y) → (y, x).
Negative signs remain attached to their respective values.

Step-by-Step Solution：
Original: (8, –2)
Swap → (–2, 8)

Option Analysis：
A. ✅ Correct — swap done accurately
B. Flipped and swapped incorrectly
C. Both values flipped and not swapped — incorrect
D. Flipped y unnecessarily — incorrect

Common Mistake...