A line segment has endpoints at [tex]$(-4,-6)$[/tex] and [tex]$(-6,4)$[/tex]. Which reflection will produce an image with endpoints at [tex]$(4, 6)$[/tex] and [tex]$(6,4)$[/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 :

To determine which reflection will produce an image with endpoints at [tex]\((4, 6)\)[/tex] and [tex]\((6, 4)\)[/tex] from the initial endpoints [tex]\((-4, -6)\)[/tex] and [tex]\((-6, 4)\)[/tex], let's analyze each type of reflection in detail:

1. Reflection across the [tex]\(x\)[/tex]-axis:
- Reflecting a point [tex]\((x, y)\)[/tex] across the [tex]\(x\)[/tex]-axis changes its coordinates to [tex]\((x, -y)\)[/tex].
- Applying this to the initial points:
[tex]\[ (-4, -6) \rightarrow (-4, 6) \][/tex]
[tex]\[ (-6, 4) \rightarrow (-6, -4) \][/tex]
- The reflected points are [tex]\((-4, 6)\)[/tex] and [tex]\((-6, -4)\)[/tex], which do not match [tex]\((4, 6)\)[/tex] and [tex]\((6, 4)\)[/tex].

2. Reflection across the [tex]\(y\)[/tex]-axis:
- Reflecting a point [tex]\((x, y)\)[/tex] across the [tex]\(y\)[/tex]-axis changes its coordinates to [tex]\((-x, y)\)[/tex].
- Applying this to the initial points:
[tex]\[ (-4, -6) \rightarrow (4, -6) \][/tex]
[tex]\[ (-6, 4) \rightarrow (6, 4) \][/tex]
- The reflected points are [tex]\((4, -6)\)[/tex] and [tex]\((6, 4)\)[/tex], which do not match [tex]\((4, 6)\)[/tex] and [tex]\((6, 4)\)[/tex].

3. Reflection across the line [tex]\(y = x\)[/tex]:
- Reflecting a point [tex]\((x, y)\)[/tex] across the line [tex]\(y = x\)[/tex] changes its coordinates to [tex]\((y, x)\)[/tex].
- Applying this to the initial points:
[tex]\[ (-4, -6) \rightarrow (-6, -4) \][/tex]
[tex]\[ (-6, 4) \rightarrow (4, -6) \][/tex]
- The reflected points are [tex]\((-6, -4)\)[/tex] and [tex]\((4, -6)\)[/tex], which do not match [tex]\((4, 6)\)[/tex] and [tex]\((6, 4)\)[/tex].

4. Reflection across the line [tex]\(y = -x\)[/tex]:
- Reflecting a point [tex]\((x, y)\)[/tex] across the line [tex]\(y = -x\)[/tex] changes its coordinates to [tex]\((-y, -x)\)[/tex].
- Applying this to the initial points:
[tex]\[ (-4, -6) \rightarrow (6, 4) \][/tex]
[tex]\[ (-6, 4) \rightarrow (-4, -6) \][/tex]
- The reflected points are [tex]\((6, 4)\)[/tex] and [tex]\((-4, -6)\)[/tex], which match neither [tex]\((4, 6)\)[/tex] nor [tex]\((6, 4)\)[/tex].

Based on the analysis above, no reflection produces the image points [tex]\((4, 6)\)[/tex] and [tex]\((6, 4)\)[/tex] from the initial points [tex]\((-4, -6)\)[/tex] and [tex]\((-6, 4)\)[/tex]. Therefore, the answer is that there is no matching reflection from the given options.