### Home > CC4 > Chapter 1 > Lesson 1.3.2 > Problem1-83

1-83.

Which of the graphs below represent functions? Justify your answer. Homework Help ✎

• Do all of these graphs have one output value for every input value?

1. For each graph above, state the domain and range.

• The domain of a graph is its possible $x$-values.

All real numbers.

The range of a graph is its possible y-values.

$1\le y\le3$