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4.08 Inverse functions

Adaptive
Worksheet

Interactive practice questions

Consider the function $f\left(x\right)=x-6$f(x)=x6.

Which of the following is an inverse function for $f\left(x\right)$f(x)?

$f^{-1}\left(x\right)=\frac{x}{6}$f1(x)=x6

A

$f^{-1}\left(x\right)=6x$f1(x)=6x

B

$f^{-1}\left(x\right)=x+6$f1(x)=x+6

C

$f^{-1}\left(x\right)=\sqrt[6]{x}$f1(x)=6x

D

$f^{-1}\left(x\right)=6-x$f1(x)=6x

E

$f^{-1}\left(x\right)=x^6$f1(x)=x6

F
Easy
< 1min

Consider the function $f\left(x\right)=8x-3$f(x)=8x3.

Easy
< 1min

A function $f\left(x\right)$f(x) has an inverse given by $f^{-1}\left(x\right)=x+4$f1(x)=x+4.

Easy
< 1min

A function $f\left(x\right)$f(x) has an inverse given by $f^{-1}\left(x\right)=4x$f1(x)=4x.

Easy
< 1min
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Outcomes

A2.F.2

The student will investigate and analyze characteristics of square root, cube root, rational, polynomial, exponential, logarithmic, and piecewise-defined functions algebraically and graphically.

A2.F.2i

Determine the inverse of a function algebraically and graphically, given the equation of a linear or quadratic function (linear, quadratic, and square root). Justify and explain why two functions are inverses of each other.

A2.F.2j

Graph the inverse of a function as a reflection over the line y = x.

A2.F.2k

Determine the composition of two functions algebraically and graphically.

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