What is the domain of the function represented by the graph?

On a coordinate plane, a line goes through (0, negative 2) and (4, negative 1).
all real numbers
Negative 4 less-than-or-equal-to x less-than-or-equal-to 4
Negative 3 less-than-or-equal-to y less-than-or-equal-to negative 1
y less-than 0