Home > CC3 > Chapter 9 > Lesson 9.1.1 > Problem 9-13
9-13.
Determine whether the graphs below are functions or not functions. Explain your reasoning.
A graph is only a function if there is no more than one
Are there any points on this line segment that are above or below another point on the line segment? If there are, the graph is not a function.
This graph is a function.
See hint for part (a).
This graph is not a function. Some
-values are related to multiple values. For example, when is , can be or .
See hint for part (a).
See hint for part (a).
See hint for part (a).
This graph is not a function.
See hint for part (a).