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M3-020-A14-V02
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F-BF.4.a
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M3-020-A14-V02
Find inverse functions for simple invertible functions, including rational examples.
Match inverse formulas to reflected graph features
Problem
For \(f(x)~=~2^{x~-~1}~+~5\) and \(f^{-1}(x)~=~\log_{2}(x~-~5)~+~1\), reflect the asymptote and point \((1,~6)\), then state how the original range becomes the inverse domain.
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A
Features: horizontal asymptote y=5 reflects to inverse vertical asymptote x=5, and point (1,6) reflects to (6,1). Sets: original range (5,∞) becomes inverse domain (5,∞).
B
Features: horizontal asymptote y=5 remains inverse horizontal asymptote y=5, while point (1,6) reflects to (6,1). Sets: original range (5,∞) remains an output range instead of becoming inverse domain.
C
Features: horizontal asymptote y=5 reflects to inverse vertical asymptote x=5, and point (1,6) reflects to (6,1). Sets: original range (5,∞) is copied as inverse range rather than inverse domain.
D
Features: horizontal asymptote y=5 reflects to inverse vertical asymptote x=5, while point (1,6) remains (1,6). Sets: original range (5,∞) correctly becomes inverse domain (5,∞).
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Curriculum context
Standard F-BF.4.a
Category Functions
Domain Building Functions
Objective Find inverse functions for simple invertible functions, including rational examples.
Problem type Match inverse formulas to reflected graph features