Question

current skill
is this relation a function?
input output
-8 -8
-3 -3
-3 -6
5 -5
4 -8
yes
no

Explanation:

Step1: Recall function definition

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

Step2: Check input -3

Input -3 has two outputs: -3 and -6.

Answer:

No (the checkbox next to "No" should be selected)