Inverse Functions

Front

Which of the following is NOT TRUE about inverse functions?

• Inverse functions are reflections of each other over the line y = x.
• You find the inverse by switching x and y in the equation.
• The domain of a function always becomes the domain of its inverse.
• The domain of a function always becomes the range of its inverse.

Back

The domain of a function always becomes the domain of its inverse.

Front

What's the best description? Options:

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.

Back

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

Front

Which is f ^-1(x)? Options:

f ^-1(x) = 5x + 3

,

f ^-1(x) = 5x - 3

,

f ^-1(x) = 5x - 15

,

f ^-1(x) = 1/5(x) + 3/5

Back

f ^-1(x) = 5x - 3

Front

Are these functions inverses?

Back

Yes

Front

If f^-1(-25) = 7 then what is f(7)? Options: 25, 7, No enough information, -25

Back

-25

Front

Are these inverse functions?

Back

no

Front

If f(x) = 3x-9, what is f ^-1(12)?

Back

7

Front

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? Options: g(-2) = 0, g(1) = 1, g(-2) = -3, g(-1) = 2

Back

g(-1) = 2

Front

Is the inverse function found correctly?

Back

yes

Front

Back