Geometry

Question Analysis:
We compare the sign and position of each point to determine the type of motion.

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

Step-by-Step Solution:
X(−1, 2) → X ′(1, 2)
Y(−2, 4) → Y ′(2, 4)
Z(−3, 1) → Z ′(3, 1)
Only the x-values change sign; y-values stay the same.

Option Analysis:
A – would change y, not x
B – not consistent coordinate shift
C – correct
D – both x an...