Inverses and Invertible Functions

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

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

The inverse has been reflected over which line?

• y = x

• y =1

• y = 0

• y = x + 1

Are these functions inverses?

• Yes

• No

The inverse has been reflected over which line?

• y = x

• y =1

• y = 0

• y = x + 1

The inverse has been reflected over which line?

• y = x

• y =1

• y = 0

• y = x + 1

Will the inverse of this function, be a function?

• No

• Yes

• No way to tell

An ​ (a)   takes a previously found result ( a y value) and returns it to its original value (x value). This means you are ​ (b)   a function

• function

• inverse

• 2 or more

• undoing