Find inverse functions. Solve an equation of the form f(x) = c for a simple function f that has an inverse and write an expression for the inverse.

Sample Practice Questions (3)

The graph of a function

f (x)

is shown below. Which of the following graphs best represents the inverse function,

f^{- 1} (x)

AGraph A (reflection over

y = x

)

BGraph B (reflection over x-axis)

CGraph C (reflection over y-axis)

DGraph D (translation)

The graph of function

f (x)

is shown below. If

f (x) = 2 x + 4

, which equation represents the line that is the reflection of

f (x)

over the line

y = x

y = \frac{1}{2} x - 2

y = \frac{1}{2} x + 2

y = - 2 x - 4

y = 2 x - 4

The graph shown below represents the function

f (x)

. Which equation represents the inverse function,

f^{- 1} (x)

f^{- 1} (x) = 2 x - 4

f^{- 1} (x) = 2 x + 4

f^{- 1} (x) = \frac{1}{2} x - 2

f^{- 1} (x) = - 2 x + 4

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