Question

All points of the step function f(x) are graphed.


What is the domain of f(x)?

A. {x| –4 < x ≤ 4}
B. {x| –3 < x ≤ 4}
C. {x| 1 < x ≤ 4}
D. {x| 2 < x ≤ 4}
here is the graph
http://media.edgenuity.com/evresources/3109/3109-06/3109-06-02/3109-06-02-assessment/3109-06-02-20.png

Answer 1

recall that a clear circle means that the x value is not in the domain and a filled circle means that the x value is part of the domain.

Answer 2

the domain if the above is 0 < x <= 1

Answer 3

yea i understand that but i dont no how to find it because there is multiple ones that are closed

Answer 4

just look at the 2 ends
The circles in the 'middle' have all filled circles at each step.

Answer 5

im so confused lol

Answer 6

there is a value of x for each point along the graph except for x = -4
Where there is an open circle after x = -4 there is also a filled circle

Answer 7

so there is continuity there

Answer 8

hmm...

Answer 9

is it {x| –3 < x ≤ 4} ?