Question

unit test
unit test complete
11 12 13 14 15
the step function f(x) is graphed. what is the value of f(1)?
y
5
4
3
2
1
-5 -4 -3 -2 -1 0 1 2 3 4 5 x
-2
-3
-4
-5
mark this and return save and exit next
0
1
2
4

Explanation:

Step1: Locate x=1 on the graph

Find the vertical line x=1.

Step2: Check the step function at x=1

The step function has a horizontal segment at y=1 that includes x=1 (closed dot), so f(1)=1.

Answer:

1