If

is true, then it is the statement that either statement

or statement

, or both, are true.
In the coordinate plane,

refers to both the 2nd and 3rd quadrants.

refers to both the 3rd and 4th quadrants. Taken together, then,

refers to the 2nd, 3rd, and 4th quadrants, since at least one coordinate of any point in this region is negative.