Skip to content

K–12 course Available practice SAT practice Sign in Admin

grade 11 · A2-012

Find an inverse function

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

← Learning map

Learn together Try with a hint Show what I know

Try with a hintFresh problem · seed 1374826467

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

forwardmultiply by 2add 1

↔

inversesubtract 1divide by 2

Give me one hint

Undo operations in reverse order.

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

It is always okay to go back to more help.

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