Question

look at this table:
x\ty
-14\t18
16\t2
18\t2
5\t-2
6\t18
is this relation a function?
yes
no
submit
work it out
not feeling ready yet? these can help:
input/output tables: find the rule (83)
lesson: relations and functions

Explanation:

Step1: Recall function definition

A relation is a function if every input (x-value) has exactly one output (y-value).

Step2: Check x-values for repeats

Examine the x-column: -14, 16, 18, 5, 6. All x-values are unique, so each x maps to only one y.

Answer:

yes