Given:
[tex]$Y'$[/tex] has endpoints located at [tex]$X'(0,8)$[/tex] and [tex]$Y'(0,2)$[/tex]. It was dilated at a scale factor of 2 from center [tex]$(0,2)$[/tex].

Question:
Which statement describes the pre-image?

A. [tex]$\overline{XY}$[/tex] is located at [tex]$X(0,1)$[/tex] and [tex]$Y(0,5)$[/tex] and is half the length of [tex]$\overline{X'Y'}$[/tex].
B. [tex]$\overline{XY}$[/tex] is located at [tex]$X(0,1)$[/tex] and [tex]$Y(0,5)$[/tex] and is twice the length of [tex]$\overline{X'Y'}$[/tex].
C. [tex]$\overline{XY}$[/tex] is located at [tex]$X(0,5)$[/tex] and [tex]$Y(0,2)$[/tex] and is half the length of [tex]$\overline{X'Y'}$[/tex].
D. [tex]$\overline{XY}$[/tex] is located at [tex]$X(0,5)$[/tex] and [tex]$Y(0,2)$[/tex] and is twice the length of [tex]$\overline{X'Y'}$[/tex].



Answer :

To solve this problem, we need to determine the original positions of the points [tex]\(X\)[/tex] and [tex]\(Y\)[/tex] before the dilation occurred. We know the dilation had a scale factor of 2 with a center at [tex]\((0, 2)\)[/tex].

1. Identify Given Points and Center of Dilation:

- [tex]\(X'(0,8)\)[/tex]
- [tex]\(Y'(0,2)\)[/tex]
- Center of dilation: [tex]\((0,2)\)[/tex]
- Scale factor: 2

2. Find the Pre-Image Coordinates:

For a point [tex]\(P'(x', y')\)[/tex] that is dilated at the center [tex]\((0, 2)\)[/tex] with scale factor 2, the pre-image point [tex]\(P(x, y)\)[/tex] can be found using the formula:
[tex]\[ y - 2 = \frac{1}{2}(y' - 2) \][/tex]
Solving this for each coordinate:

- For [tex]\(X'(0,8)\)[/tex]:
[tex]\[ y - 2 = \frac{1}{2}(8 - 2) \implies y - 2 = 3 \implies y = 5 \][/tex]
So [tex]\(X(0, 5)\)[/tex].

- For [tex]\(Y'(0,2)\)[/tex]:
[tex]\[ y - 2 = \frac{1}{2}(2 - 2) \implies y - 2 = 0 \implies y = 2 \][/tex]
So [tex]\(Y(0, 2)\)[/tex].

3. Determine Lengths of Segments:

- Length of [tex]\(\overline{X'Y'}\)[/tex]:
[tex]\[ |8 - 2| = 6 \][/tex]

- Length of [tex]\(\overline{XY}\)[/tex]:
[tex]\[ |5 - 2| = 3 \][/tex]
Since the dilation scale factor was 2, the length of the pre-image [tex]\(\overline{XY}\)[/tex] should be half of the length of [tex]\(\overline{X'Y'}\)[/tex].
[tex]\[ \frac{6}{2} = 3 \][/tex]

4. Match the Pre-Image Points and Length with the Given Statements:

- The points [tex]\(X\)[/tex] and [tex]\(Y\)[/tex] after dilation are [tex]\(X(0, 5)\)[/tex] and [tex]\(Y(0, 2)\)[/tex].

- The length of [tex]\(\overline{XY}\)[/tex] is half the length of [tex]\(\overline{X'Y'}\)[/tex].

The statement that matches this description is:

[tex]\[ \overline{XY} \text{ is located at } X(0, 5) \text{ and } Y(0, 2) \text{ and is half the length of } \overline{X'Y'} \][/tex]

Thus, the correct statement is:

[tex]\[ \text{Option 3: } \overline{X Y} \text{ is located at } X(0,5) \text{ and } Y(0,2) \text{ and is half the length of } \overline{X^{\prime} Y^{\prime}}. \][/tex]