Question

a table of values is shown below:
input a value of $x$ that would make the set of ordered pairs not a function.
$x$ $y$
empty box -8
18 -8
10 10
12 10

Explanation:

Step1: Recall function definition

A function requires each input (x-value) to have exactly one output (y-value). A repeated x-value with a different y-value breaks this rule.

Step2: Identify existing x-values

The given x-values are 10, 11, 12.

Step3: Select duplicate x-value

If we set the missing x to 10, 11, or 12, this x-value will map to two different y-values (e.g., x=10 would map to -8 and 10).

Answer:

10 (or 11, or 12)