Example

Graphing y>3xy > -3x

To graph the inequality y>3xy > -3x, apply the three-step graphing procedure: Step 1 — Graph the boundary line. Replace the >> symbol with == to obtain the boundary line y=3xy = -3x. Because the inequality uses >> (strict), draw the boundary line as a dashed line. Step 2 — Test a point. Since the boundary line passes through the origin, the point (0,0)(0, 0) cannot be used as a test point. Choose a point such as (1,1)(1, 1) which is clearly not on the line: 1>3(1)1 > -3(1) which simplifies to 1>31 > -3. This is true, so (1,1)(1, 1) is a solution. Step 3 — Shade the correct side. Because the test point (1,1)(1, 1) is a solution, shade the half-plane that contains (1,1)(1, 1) — the region above the dashed boundary line.

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Updated 2026-05-03

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