The Inverse of Functions

What is f^-1(x)?

• f^-1(x) = 4x - 3

• f^-1(x) = -4x - 3

Which is f ^-1(x)?

• f ^-1(x) = 5x + 3

• f ^-1(x) = 5x - 3

• f ^-1(x) = 5x - 15

Which graph represents the functions f(x) and f^-1(x)?

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Which graph represents the functions f(x) and f^-1(x)?

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What is the best description?

• They are both functions, but not inverse functions.

• They are reflected over y=x, but they are not both functions.

• They are not reflected over y=x, and they are not both functions.

• They are inverse functions.

The inverse has been reflected over which line?

• y = x

• y =1

• y = 0

• y = x + 1

If f and g are inverse functions, and
f(2) = -1     g(1) = -2     f(1) = -2, 
then which of the following MUST be true?

• g(-2) = -1

• g(2) = 1

• g(-2) = 1

• g(1) = 2

Are these functions inverses?

• Yes

• No

Are these functions inverses?

• No

• Yes

• No way to tell

Is the inverse function found correctly?

• yes

• no