Question

unit test
unit test complete
21
the graph of the piecewise function f(x) is shown. what is the domain of f(x)?
options:
{ x | 1 ≤ x < 5 }
{ x | 1 ≤ x ≤ 5 }
{ y | -4 ≤ y < 1 }
{ y | -4 ≤ y ≤ 1 }
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Explanation:

Step1: Identify domain definition

Domain is all x-values of the function.

Step2: Analyze graph's x-range

The graph spans x from 1 (closed dot) to 5 (open dot). So x ≥1 and x <5.

Step3: Match with options

The set {x | 1 ≤ x <5} matches the domain.

Answer:

{x | 1 ≤ x < 5}