### Home > INT3 > Chapter 7 > Lesson 7.2.5 > Problem 7-115

Consider the graph at right.

Is the graph a function? Explain.

What causes a graph to be a function or not a function?

Look up 'function' in the glossary if you aren't sure.Sketch the inverse of this graph. Is the inverse a function? Justify your answer.

Reflect the graph across

.

Are there any-values that have more than one-value?Must the inverse of a function be a function? Explain.

Consider several different functions and their inverses.

Describe a characteristic of functions that have inverse functions.

See part (a).

Think about how this rule is translated to the inverse.Could the inverse of a non-function be a function? Explain or give an example.

Think about functions whose inverses are non-functions.

What about the inverse of that inverse?