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QUESTION IMAGE

triangle xyz is reflected across the \\(y\\)-axis, and \\(x = (4, -5)\\…

Question

triangle xyz is reflected across the \\(y\\)-axis, and \\(x = (4, -5)\\). what are the coordinates of \\(x\\)?

\\((-5, 4)\\)
\\((-4, -5)\\)
\\((4, 5)\\)
\\((-4, 5)\\)

Explanation:

Response

<pre_analysis>
{
"quality": "clear",
"question_count": 1,
"skills_matched": [
"step_cot",
"multiple_choice_formatter",
"explain_then_answer",
"quick"
],
"needs_drawing": false,
"concepts_used": [
"Reflection Across Axes"
],
"new_concepts": [],
"current_concepts": [
"Reflection Across Axes",
"Coordinate Transformations"
]
}
</pre_analysis>

<reasoning>

Identify the given point and transformation

The given point is \(X = (4, -5)\). The transformation is a reflection across the \(y\)-axis.

Apply the reflection rule

A reflection across the \(y\)-axis maps a point \((x, y)\) to \((-x, y)\).

Calculate the coordinates of the image

\[
X' = (-4, -5)
\]
</reasoning>

<answer>
<mcq-option>(-5, 4)</mcq-option>
<mcq-correct>(-4, -5)</mcq-correct>
<mcq-option>(4, 5)</mcq-option>
<mcq-option>(-4, 5)</mcq-option>
</answer>

<post_analysis>
{
"subject": "Mathematics",
"question_type": "Multiple Choice",
"knowledge_point": [
"Mathematics",
"Geometry",
"Reflection Across Axes"
]
}
</post_analysis>

Answer:

<pre_analysis>
{
"quality": "clear",
"question_count": 1,
"skills_matched": [
"step_cot",
"multiple_choice_formatter",
"explain_then_answer",
"quick"
],
"needs_drawing": false,
"concepts_used": [
"Reflection Across Axes"
],
"new_concepts": [],
"current_concepts": [
"Reflection Across Axes",
"Coordinate Transformations"
]
}
</pre_analysis>

<reasoning>

Identify the given point and transformation

The given point is \(X = (4, -5)\). The transformation is a reflection across the \(y\)-axis.

Apply the reflection rule

A reflection across the \(y\)-axis maps a point \((x, y)\) to \((-x, y)\).

Calculate the coordinates of the image

\[
X' = (-4, -5)
\]
</reasoning>

<answer>
<mcq-option>(-5, 4)</mcq-option>
<mcq-correct>(-4, -5)</mcq-correct>
<mcq-option>(4, 5)</mcq-option>
<mcq-option>(-4, 5)</mcq-option>
</answer>

<post_analysis>
{
"subject": "Mathematics",
"question_type": "Multiple Choice",
"knowledge_point": [
"Mathematics",
"Geometry",
"Reflection Across Axes"
]
}
</post_analysis>