QUESTION IMAGE
Question
the graph shows the relationship between a gift card balance and the number of visits to a smoothie shop.
what is the amount spent on each visit to the smoothie shop?
- \\$18.00
- \\$4.00
- \\$3.00
- \\$6.00
<pre_analysis>
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"question_count": 1,
"skills_matched": [
"step_cot",
"multiple_choice_formatter",
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"tutor"
],
"needs_drawing": false,
"concepts_used": [
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],
"new_concepts": [
"Linear Rate of Change",
"Slope Interpretation"
],
"current_concepts": [
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</pre_analysis>
<reasoning>
Identify points from the graph
Find the coordinates of the plotted points.
Using the Y-Intercept concept, the initial balance is at \(x = 0\), which is \(18\).
Other points are \((1, 15)\), \((2, 12)\), \((3, 9)\), \((4, 6)\), \((5, 3)\), and \((6, 0)\).
Calculate the rate of change
Find the difference in balance per visit.
\[
\text{Change} = 18 - 15 = 3
\]
\[
\text{Change} = 15 - 12 = 3
\]
Determine the amount spent
The balance decreases by \(3\) dollars per visit.
Thus, the amount spent on each visit is \(\$3.00\).
</reasoning>
<answer>
<mcq-option>\(18.00\)</mcq-option>
<mcq-option>\(4.00\)</mcq-option>
<mcq-correct>\(3.00\)</mcq-correct>
<mcq-option>\(6.00\)</mcq-option>
</answer>
<post_analysis>
{
"subject": "Mathematics",
"question_type": "Multiple Choice",
"knowledge_point": [
"Mathematics",
"Algebra",
"Linear Rate of Change"
]
}
</post_analysis>
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<pre_analysis>
{
"quality": "clear",
"question_count": 1,
"skills_matched": [
"step_cot",
"multiple_choice_formatter",
"explain_then_answer",
"tutor"
],
"needs_drawing": false,
"concepts_used": [
"Y-Intercept"
],
"new_concepts": [
"Linear Rate of Change",
"Slope Interpretation"
],
"current_concepts": [
"Y-Intercept",
"Linear Rate of Change",
"Slope Interpretation"
]
}
</pre_analysis>
<reasoning>
Identify points from the graph
Find the coordinates of the plotted points.
Using the Y-Intercept concept, the initial balance is at \(x = 0\), which is \(18\).
Other points are \((1, 15)\), \((2, 12)\), \((3, 9)\), \((4, 6)\), \((5, 3)\), and \((6, 0)\).
Calculate the rate of change
Find the difference in balance per visit.
\[
\text{Change} = 18 - 15 = 3
\]
\[
\text{Change} = 15 - 12 = 3
\]
Determine the amount spent
The balance decreases by \(3\) dollars per visit.
Thus, the amount spent on each visit is \(\$3.00\).
</reasoning>
<answer>
<mcq-option>\(18.00\)</mcq-option>
<mcq-option>\(4.00\)</mcq-option>
<mcq-correct>\(3.00\)</mcq-correct>
<mcq-option>\(6.00\)</mcq-option>
</answer>
<post_analysis>
{
"subject": "Mathematics",
"question_type": "Multiple Choice",
"knowledge_point": [
"Mathematics",
"Algebra",
"Linear Rate of Change"
]
}
</post_analysis>