Geometry

Question Analysis:
This question tests symbolic recognition of reflection rules.

Key Concept Explanation:
x-axis: (x, y) → (x, −y)

Step-by-Step Solution:
(a, b) → (a, −b) → only y flipped → matches x-axis rule

Option Analysis:
A) ❌ y-axis would flip x
B) ✅ correct
C) ❌ that would flip both
D) ❌ rotation flips both and changes ori...