Intro to Inverse Linear Functions

What's the name of the inverse of g(x)?

• f(x)
• f^-1(x)
• y
• g^-1(x)

What is the first step in finding the equation of the inverse of a function?

• get x by itself
• switch x and y
• solve for y
• write the function in inverse function notation

What is the inverse of the function
f(x) = 2x + 4   ?

• f^-1(x) = 4(x -2)
• f^-1(x) = (x-4)/2
• f^-1(x) = x/2 - 4
• f^-1(x) = x/4 + 2

Find the inverse of f(x) = 3x +8

• f^-1(x) = 3(x-8)
• f^-1(x) = (8x-1)/3
• f^-1(x) = (x-8)/3
• f^-1(x) = (x+8)/3

• f^-1(x) = 4x + 7
• f^-1(x) = -4x + 28
• f^-1(x) = -4x - 7
• f^-1(x) = 4x + 28

• A.
• B.
• C.
• D.

• A.
• B.
• C.
• D.

Are these inverse functions?

• yes
• no
• no way to tell

are these inverse functions?

• no
• yes
• no way to tell

is the inverse function found correctly?

• yes
• no