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which equation is the inverse of (y = x^2 + 16)? * (y = x^2 - 16) * (y …

Question

which equation is the inverse of (y = x^2 + 16)?

  • (y = x^2 - 16)
  • (y = \pm\sqrt{x} - 16)
  • (y = \pm\sqrt{x - 16})
  • (y = x^2 - 4)

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": [
"Inverse Functions"
],
"new_concepts": [],
"current_concepts": [
"Inverse Functions"
]
}
</pre_analysis>

<reasoning>

Swap variables

\[
x = y^2 + 16
\]

Solve for y

\[

$$\begin{aligned} y^2 &= x - 16 \\ y &= \pm\sqrt{x - 16} \end{aligned}$$

\]
</reasoning>

<answer>
<mcq-option>(A) \(y = x^2 - 16\)</mcq-option>
<mcq-option>(B) \(y = \pm\sqrt{x} - 16\)</mcq-option>
<mcq-correct>(C) \(y = \pm\sqrt{x - 16}\)</mcq-correct>
<mcq-option>(D) \(y = x^2 - 4\)</mcq-option>
</answer>

<post_analysis>
{
"subject": "Mathematics",
"question_type": "Multiple Choice",
"knowledge_point": [
"Mathematics",
"Algebra",
"Inverse Functions"
]
}
</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": [
"Inverse Functions"
],
"new_concepts": [],
"current_concepts": [
"Inverse Functions"
]
}
</pre_analysis>

<reasoning>

Swap variables

\[
x = y^2 + 16
\]

Solve for y

\[

$$\begin{aligned} y^2 &= x - 16 \\ y &= \pm\sqrt{x - 16} \end{aligned}$$

\]
</reasoning>

<answer>
<mcq-option>(A) \(y = x^2 - 16\)</mcq-option>
<mcq-option>(B) \(y = \pm\sqrt{x} - 16\)</mcq-option>
<mcq-correct>(C) \(y = \pm\sqrt{x - 16}\)</mcq-correct>
<mcq-option>(D) \(y = x^2 - 4\)</mcq-option>
</answer>

<post_analysis>
{
"subject": "Mathematics",
"question_type": "Multiple Choice",
"knowledge_point": [
"Mathematics",
"Algebra",
"Inverse Functions"
]
}
</post_analysis>