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M3-028-A14-V04
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F-IF.9
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M3-028-A14-V04
Compare functions represented algebraically, graphically, numerically, or verbally.
Write an evidence-scoped comparison without overgeneralizing
Problem
For \(p(x)~=~2x~-~5\) and table \(q\) with points \((0,~-1)\), \((1,~1)\), and \((2,~3)\), compare the observed rates and values at \(0\), state whether the functions are identical, and limit any claim about \(q\) outside the table.
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A
Analysis: p shows rate 2 while q shows rate 1 on the supplied intervals, but p(0) = −5 and q(0) = −1, so they are different. The table alone does not establish that q stays linear or keeps rate 2 outside the shown inputs.
B
Analysis: Both show rate 2 on the supplied intervals, but p(0) = −5 and q(0) = −1, so they are different. The table alone establishes that q stays linear or keeps rate 2 outside the shown inputs.
C
Analysis: Both show rate 2 on the supplied intervals, but p(0) = −5 and q(0) = −1, so they are different. The table alone does not establish that q stays linear or keeps rate 2 outside the shown inputs.
D
Analysis: Both show rate 2 on the supplied intervals, but p(0) = −1 and q(0) = −1, so they are different. The table alone does not establish that q stays linear or keeps rate 2 outside the shown inputs.
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Curriculum context
Standard F-IF.9
Category Functions
Domain Interpreting Functions
Objective Compare functions represented algebraically, graphically, numerically, or verbally.
Problem type Write an evidence-scoped comparison without overgeneralizing