### Home > CCAA8 > Chapter cca1 > Lesson cca1.2.5 > Problem1-78

1-78.

Which of the relationships below are functions? If a relationship is not a function, give a reason to support your conclusion. Homework Help ✎

• There is more than one output value for some inputs; therefore, the relation is not a function.

1.  $x$ $y$ $−3$ $19$ $5$ $19$ $19$ $0$ $0$ $−3$
• It is a function. Every input had only one output even if it is the same output such as $19$.

1.  $x$ $7$ $−2$ $0$ $7$ $4$ $y$ $10$ $0$ $10$ $3$ $0$
• There is more than one output value for $x=7$.
Is this relation a function?

• It is a function.