Function Inverses Composition

What does an inverse function do?

• Nothing

• Makes it bigger

• Does the opposite of the original function

Find the inverse of the function
f(x) = 3x − 5

• f^-1(x)=3x +5

• f^-1(x)=(x+5)/3

• f^-1(x)=3y-5

• f^-1(x)=3y+5

What operation allows us to verify if functions are inverses?

• Multiplying

• Dividing

• Adding

• Composing

What is the inverse of this function?

• A

• B

• C

• D

Was the inverse function found correctly?

• no,

• yes

Find the inverse of
f(x) = 1/4x - 7

• f^-1(x) = 4x + 7

• f^-1(x) = -4x + 28

• f^-1(x) = -4x - 7

• f^-1(x) = 4x + 28

If f(x)=x+5, what is f^-1(x)?

• (x + 5)²

• x - 5

• (x + 5)^-1

• undefined

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

• x/3

• 3x²

• 3x + 3x

• 3x^-1

• Inverse Functions

• Not Inverse Functions