Question

find the domain and range of the relation. write in interval notation draw
(a coordinate grid with a relation plotted, x-axis from -14 to 14, y-axis from -14 to 14, blue points at (-4,9), (7,7), (8,8) and lines connecting them)

Explanation:

Step1: Identify domain values

The domain is all x-values of the points: $x=-5$, $x=8$, $x=9$

Step2: Write domain in interval notation

Since these are discrete points, the domain is the set of these values written as $[-5,-5] \cup [8,8] \cup [9,9]$

Step3: Identify range values

The range is all y-values of the points: $y=7$, $y=8$, $y=9$

Step4: Write range in interval notation

Since these are discrete points, the range is the set of these values written as $[7,7] \cup [8,8] \cup [9,9]$

Answer:

Domain: $\boldsymbol{[-5,-5] \cup [8,8] \cup [9,9]}$
Range: $\boldsymbol{[7,7] \cup [8,8] \cup [9,9]}$