Question

ut test25-26

1. pentagon vwxyz is shown on the coordinate grid. a student reflected pentagon vwxyz across the y-axis to create pentagon vwxyz.

which rule best describes the transformation?
a. $(x,y) \
ightarrow (x,-y)$
b. $(x,y) \
ightarrow (y, y + 8)$
c. $(x,y) \
ightarrow (-x,y)$
d. $(x,y) \
ightarrow (-y,x)$

Explanation:

A reflection across the y-axis changes the sign of the x-coordinate of each point while keeping the y-coordinate the same. This matches the transformation rule where each original point $(x,y)$ maps to $(-x,y)$.

Answer:

C. $(x,y) \to (-x,y)$