5.7 Exercise 5

Use the set of ordered pairs to determine whether the relation is a function.

1. $\left\{\left(- 3 , 27\right) , \left(- 2 , 8\right) , \left(- 1 , 1\right) , \left(0 , 0\right) , \left(1 , 1\right) , \left(2 , 8\right) , \left(3 , 27\right)\right\}$
2. $\left\{\left(9 , - 3\right) , \left(4 , - 2\right) , \left(1 , - 1\right) , \left(0 , 0\right) , \left(1 , 1\right) , \left(4 , 2\right) , \left(9 , 3\right)\right\}$