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grade 11 · A2-012

Find an inverse function

Exchange input and output, then solve for the new output.

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Show what I knowFresh problem · seed 119320156

If \(f(x)=4x+2\), which rule gives \(f^{-1}(x)\)?

forwardmultiply by 4add 2

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inversesubtract 2divide by 4

Choose an answer\(f^{-1}(x)=\frac{4}{x-2}\)\(f^{-1}(x)=\frac{x-2}{4}\)\(f^{-1}(x)=4x-2\)\(f^{-1}(x)=\frac{x+2}{4}\)

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Math Lab is a working name for Ready Rung's separate math-learning product. Guided success and independent evidence are reported separately.