Question

Solve graphically: x ≤ 0 and y ≥ 0

Answer 1

x ≤ 0, y ≥ 0

Consider the lines whose equation are x = 0 and y = 0. 

These represent the equations of the Y-axis and X-axis, respectively, which divide the plane into four parts.

Since x ≤ 0, y ≥ 0, the solution set is in the second quadrant which is shaded in the graph.