What is the domain ?A.All real NumbersB Y≥-4C. Y>-4D X≤4

x ≤4
1) The Domain is the set of entries, a function is defined.
Examining the graph we can state the Domain is:
Note there are three ways to represent, formally this set Domain:
D =(-∞, 4] or ]-∞, 4] or {D ∈ R :-∞
Simply put
x ≤4