Question

Solve graphically : x ≥ 0 and y ≥ 0

Answer 1

Consider the lines whose equations are x = 0, y = 0.

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

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