Question

17/20
x | y
-2 | 1
-1 | 1
1 | 3
2 | 3
does this table represent a function?
yes
no

Explanation:

Step1: Recall function definition

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

Step2: Check $x$-values in the table

List all $x$-values: $-2, -1, 1, 2$. Each $x$-value appears only once, so each has exactly one corresponding $y$-value.

Answer:

Yes