10/25 - Wednesday - Inverse Functions

• f^-1(x) = 4x + 7

• f^-1(x) = -4x+28

• f^-1(x) = -4x - 7

• f^-1(x) = 4x+28

Each option is a line of work that you would show if you were finding the inverse of f(x)= 2x-5.

Put the work in the correct order to find the inverse.

• 2y= x+5

• 2y-5=x

• y=2x-5

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

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

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

• f(x)
• f^-1(x)
• y
• g^-1(x)

are these inverse functions?

• no
• yes
• no way to tell

What is the inverse of the points
(1,3)(2,4)(6,8)

• (3,1)(4,2)(8,6)
• (-3,-1)(-4,-2)(-8,-6)
• (1,3)(2,4)(6,8)
• (-1,-3)(-2,-4)(-6,-8)

are these inverse functions?

• no
• yes
• no way to tell

Are these inverse functions?

• yes

• no