Geometry

Question Analysis：
This question assesses understanding of multiple properties of a y-axis reflection.
The main focus is to identify what stays the same and what changes after this transformation.

Key Concept Explanation:
For a reflection over the y-axis: (x, y) → (−x, y)
x-values change sign
y-values remain the same
Shape and size remain unchanged
Orientation is reversed (left ↔ right)

Step-by-Step Solution：
Let's evaluate each option:
A. ✅ True. The figure is flipped over the y-axis, matching the reflection rule.
B. ✅ True. Reflections are rigid transformations — they preserve distance, size, and shape.
C. ❌ False. The x-values are negatives of each other (e.g., 4 → –4), not equal.
D. ✅ True. Reflections reverse the orientation of the figure.
E. ✅ True. The y-values stay the same after reflecting ...