### Home > CCA > Chapter 1 > Lesson 1.2.5 > Problem 1-78

1-78.

Which of the relationships below are functions? If a relationship is not a function, give a reason to support your conclusion.

There is more than one output value for some inputs; therefore, the relation is not a function.

It is a function. Every input had only one output even if it is the same output such as

.

There is more than one output value for

.

Is this relation a function?

It is a function.