In the graph shown, which of the following represents the image of the line segment $P Q$ after a reflection across the $x$-axis?
(A) $P S$
(B) $T U$
(C) $M N$
(D) $W V$
(E) $F G$
![](https://cdn.mathpix.com/cropped/2024_04_20_46ead6524a8d61e21c51g-037.jpg?height=674&width=438&top_left_y=1860&top_left_x=1296)

Grade 7
To find the image of $P Q$, we reflect points $P$ and $Q$ across the $x$-axis, then join them.

Since $P$ is 3 units above the $x$-axis, then the reflection of $P$ across the $x$-axis is 3 units below the $x$-axis at the same $x$-coordinate.

That is, point $T$ is the image of $P$ after it is reflected across the $x$-axis.

Similarly, after a reflection across the $x$-axis, the image of point $Q$ will be 6 units below the $x$-axis but have the same $x$-coordinate as $Q$.

That is, point $U$ is the image of $Q$ after it is reflected across the $x$-axis.

Therefore, the line segment $T U$ is the image of $P Q$ after it is reflected across the $x$-axis.

ANSWER: (B)