Home > CCA > Chapter 4 > Lesson 4.1.2 > Problem4-28

4-28.

Examine the graphs of each relation below. Decide if each is a function. Then describe the domain and range of each.

• Is there more than one output value for a single input value? If so, it is not a function.

Determine the possible $x$-values to find the domain and the possible $y$-values to find the range.

It is not a function.
R: $−3\le x\le3$

1. Is there more than one output value for a single input value? If so, it is not a function.

Determine the possible $x$-values to find the domain and the possible $y$-values to find the range.

It is a function.
D: $−2\le x\le3$