Question

What is the range of the following relation?

all real numbers
x ≤ 0
y ≤ 0

Answer 1

To determine the range, look at the graph's y values. You can see that never does, nor never will the y value be positive. Even though the lines continue on forever, they will continue to increase in negativity. This means the range will be y ≤ 0.
(Tip, domain is always the x-values. Range is always the y-values.)