Question

unit test
unit test complete
a piecewise function is represented by the graph below. what is the domain for the piece of the function represented by f(x) = x + 1?
options: x < -1; -1 ≤ x ≤ 1; 1 ≤ x < 2; x > 1
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Explanation:

Step1: Identify the line for f(x)=x+1

The function f(x)=x+1 is a line with slope 1. From the graph, the increasing line starting at x=1 (closed dot) and going right (open dot at x=2) matches this slope.

Step2: Determine the domain

The line starts at x=1 (included, closed dot) and ends before x=2 (excluded, open dot). So the domain is 1 ≤ x < 2.

Answer:

1 ≤ x < 2