11
QuizMultiple Choice

N/A — Exam

Question 11 • Geometry: Concepts and Connections

A line segment has endpoints at open paren 3 comma 2 close paren and open paren 2 comma negative 3 close paren Which reflection will produce an image with endpoints at open paren 3 comma negative 2 close paren and open paren 2 comma 3 close paren ?

Answer
A
a reflection of the line segment across the y -axis
B
a reflection of the line segment across the line y is equal to x
C
a reflection of the line segment across the line y is equal to negative x
D
a reflection of the line segment across the x -axis

Explanation

A reflection across the x-axis keeps each x-coordinate the same and changes the sign of each y-coordinate: (x, y) becomes (x, −y). Thus (3, 2) maps to (3, −2), and (2, −3) maps to (2, 3). These are the stated image endpoints, so the correct choice is a reflection across the x-axis.

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