Question

look at this set of ordered pairs:
(8, -8)
(8, 11)
(8, 12)
(10, 12)
(-15, 8)
is this relation a function?
yes no

Explanation:

Step1: Recall function definition

A function assigns each input (x-value) to exactly one output (y-value).

Step2: Check x-values

The x-value 8 appears in three ordered pairs: (8, -8), (8, 11), (8, 12).

Step3: Conclusion

Since x=8 maps to multiple y-values, the relation is not a function.

Answer:

no