Question

what is the domain of this function?
graph of coordinate plane with points at (-5, -2), (-1, 3), (4, 3), (5, -3)
options:
{ -3, -2, 3, 4 }
{ -3, -2, 3 }
{ -5, 3, 4, 5 }
{ -5, -1, 4, 5 }

Explanation:

Step1: Recall domain definition

The domain of a function (represented by discrete points) is the set of all x - coordinates of the points.

Step2: Identify x - coordinates

Looking at the graph:

• One point has x - coordinate - 5.
• One point has x - coordinate - 1.
• One point has x - coordinate 4.
• One point has x - coordinate 5.

Answer:

{-5, -1, 4, 5}