A line segment has endpoints at [tex]$(3,2)$[/tex] and [tex]$(2,-3)$[/tex]. Which reflection will produce an image with the endpoint [tex]$(2,3)$[/tex]?

A. A reflection of the line segment across the [tex]$x$[/tex]-axis.
B. A reflection of the line segment across the [tex]$y$[/tex]-axis.
C. A reflection of the line segment across the line [tex]$y=x$[/tex].
D. A reflection of the line segment across the line [tex]$y=-x$[/tex].



Answer :

Let's analyze the reflection of the given line segment endpoints step-by-step.

We have a line segment with endpoints at [tex]\((3, 2)\)[/tex] and [tex]\((2, -3)\)[/tex].

The question is asking for a reflection that will transform the endpoint [tex]\((2, -3)\)[/tex] to [tex]\((2, 3)\)[/tex].

To determine which reflection produces this image, let's review the effect of each type of reflection on a point [tex]\((x, y)\)[/tex]:

1. Reflection across the [tex]\(x\)[/tex]-axis:
- The [tex]\(x\)[/tex]-coordinate remains the same.
- The [tex]\(y\)[/tex]-coordinate changes sign.
- Transformation: [tex]\((x, y) \rightarrow (x, -y)\)[/tex].
- For [tex]\((2, -3)\)[/tex], the transformation will be:
[tex]\[ (2, -3) \rightarrow (2, -(-3)) = (2, 3) \][/tex]

2. Reflection across the [tex]\(y\)[/tex]-axis:
- The [tex]\(x\)[/tex]-coordinate changes sign.
- The [tex]\(y\)[/tex]-coordinate remains the same.
- Transformation: [tex]\((x, y) \rightarrow (-x, y)\)[/tex].
- For [tex]\((2, -3)\)[/tex], the transformation will be:
[tex]\[ (2, -3) \rightarrow (-2, -3) \][/tex]

3. Reflection across the line [tex]\(y = x\)[/tex]:
- The [tex]\(x\)[/tex]-coordinate and [tex]\(y\)[/tex]-coordinate swap places.
- Transformation: [tex]\((x, y) \rightarrow (y, x)\)[/tex].
- For [tex]\((2, -3)\)[/tex], the transformation will be:
[tex]\[ (2, -3) \rightarrow (-3, 2) \][/tex]

4. Reflection across the line [tex]\(y = -x\)[/tex]:
- The [tex]\(x\)[/tex]-coordinate and [tex]\(y\)[/tex]-coordinate swap places and change signs.
- Transformation: [tex]\((x, y) \rightarrow (-y, -x)\)[/tex].
- For [tex]\((2, -3)\)[/tex], the transformation will be:
[tex]\[ (2, -3) \rightarrow (3, -2) \][/tex]

After analyzing the transformations, we see that reflecting a point [tex]\((x, y) = (2, -3)\)[/tex] across the [tex]\(x\)[/tex]-axis results in the desired endpoint [tex]\((2, 3)\)[/tex].

Therefore, the reflection that will transform the endpoint [tex]\((2, -3)\)[/tex] to [tex]\((2, 3)\)[/tex] is:

a reflection of the line segment across the [tex]\(x\)[/tex]-axis.

Thus, the correct answer is:
[tex]\[ \boxed{\text{a reflection of the line segment across the $x$-axis}} \][/tex]