Hello, Cindy!

Welcome aboard!

Here's the first one . . .

To find the inverse of a function :Which of the following fuctions has an inverse?

and

Find a rule for the inverse and explain why the other function has no inverse.

. . (1) Replace with

. . (2) Interchange the and

. . (3) Solve for

. . (4) The resulting function is

We have: .

.Square both sides: .

We have: .

Then: . . . . This isnota function!

Each value of producestwovalues of .

. . and a function must besingle-valued.