Question

look at this table:
x y
15 10
2 10
15 16
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 each input \(x\) has exactly one output \(y\).

Step2: Check \(x\)-values in the table

The \(x\)-value 15 appears twice: first paired with \(y=10\), then with \(y=16\). This means one input has two different outputs.

Answer:

no