Question

Eighth grad Checkpoint: Understand functions 6NP Which of these relations are functions? Select all that apply. X y 20 -12 12 9 17 2 2013 11 14 -7 3 6 -8 15 16 6 -18 16 15 9 20 15 -9 -5 12 -13 4 20 -18 10 17 13 2. 8 15 Submit

Answer 1

In a function, any x-value is related to at most 1 y-value.

In the first table, x = 20 and x = 17 are related to 2 different y-values. Then, it is not a function.

In the second table, x = 9 is related to 2 different y-values. Then, it is not a function.

The third and fourth tables are functions