Question

Which graph represents y=⌈x⌉over the domain 2≤x≤5 ?

Answer 1

4

Explanation:

#1 has to be excluded, since it jumps from 4 to 5 and has a hole between x=4 and x=5

#2 loses the extreme values. It would be correct if the domain was
`2<x<5`

#3 is including values in the interval
`1<x \leq 2` which aren't in our domain.

#4 is the remaining one.