Chapter 8.2, Problem 21E

To determine

To graph:

The given equations. Tell whether each equation is a function.

Answer to Problem 21E

The equation $y=-5$ is a function.

Explanation of Solution

Given:

An equation: $y=-5$

Calculation:

Upon graphing $y=-5$ , we will get our required graph as shown below:

We can see that no vertical line will intersect the graph of equation $y=-5$ more than one place that is each x value corresponds to a specific y -value.

Therefore, the equation $y=-5$ is a function.