PreCal Inverses

Find the inverse 
f(x)= x⁴ - 2

• ∜(x+2)
• (x+2)⁴
• -1+2x⁴
• ∜2x

What does it mean to find the inverse of a function?

• the x's and y's are switched
• the x's and y's are divided by 2
• the x's and y's are made negative
• the x's and y's are the same

Find the inverse of f(x) = -4x - 12

• f^-1(x) = 4x - 3
• f^-1(x) = -1/4x - 3
• f^-1(x) = 1/4x + 3
• f^-1(x) = - 4x - 3

Given that f(x) = 3x + 5 and g(x) = 1/3x + 5, find f(g(x)).  Are the two functions inverses of each other?

• x + 20 ; Yes they are inverses
• x + 20 ; No, they are not inverses
• x ; Yes they are inverses
• x ; No, they are not inverses

The inverse has been reflected over which line?

• y = x
• y =1
• y = 0
• y = x + 1

What is the best description?

• Not inverses, and both are functions

• Inverses, and both are functions

• Not inverse, and they are not both functions.

• Inverses, and they are not both functions.

What is the inverse of the function f(x) = 4x + 6?

• y = 4x + 6

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

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

Find the inverse of f(x) = 5/11x +10 

• f^-1(x) = 11/5(x - 10)
• f^-1(x) = 5/11x - 22
• f^-1(x) = 11/5x - 10
• None of the above