### Home > CCA > Chapter 11 > Lesson 11.3.3 > Problem 11-99

11-99.

The graphs of several relations are shown below. Decide if each is a function. If the relation is not a function, explain why not. Homework Help ✎

A relation is only a function if there is only one *y*-value for each *x*-value. Are there any *x*-values on this graph that have multiple *y*-values?

This relation is a function.

See the help for part (a).

This relation is not a function. Be sure to explain why.

See the help for part (a).