Question

look at this table:
x y
18 14
-7 13
2 6
10 15
18 9
is this relation a function?
yes no

Explanation:

Step1: Recall function definition

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

Step2: Check x - values

In the table, the x - value 18 appears twice. When \( x = 18 \), the corresponding y - values are 14 and 9. So, the input 18 has more than one output.

Answer:

no