Question

what is the domain of this relation?
(0, 2)
(1, 9)
(-9, 6)
(-4, 7)
{1, 4, 9} {-9, -4, 0, 1}
{-9, -4, 1} {0, 1, 4, 9}

Explanation:

Step1: Identify domain definition

The domain of a relation is the set of all first elements (x-values) from the ordered pairs.

Step2: Extract x-values from pairs

From $(0,2), (1,9), (-9,6), (-4,7)$, the x-values are $0, 1, -9, -4$.

Step3: Organize into a set

Arrange the values in order and write as a set: $\{-9, -4, 0, 1\}$

Answer:

$\{-9, -4, 0, 1\}$