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Question
Solve graphically: x ≤ 0 and y ≥ 0
Solution
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.
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