Question

look at this table:

x | y
1 | 16
6 | 15
1 | 10

is this relation a function?
yes no
submit
work it out
not feeling ready yet? these can help:
input/output tables: find the rule
lesson: relations

Explanation:

Step1: Recall function definition

A relation is a function if each input $x$ has exactly one output $y$.

Step2: Check $x=1$ values

For $x=1$, $y=16$ and $y=10$ (two outputs).

Answer:

no