Algebra I Recipe: Graphing Linear Inequalities with Two Variables
By G Redden
Steps
- Solve the inequality for "y".
- Determine the slope and y-intercept.
- Graph the y-intercept.
- Use the slope (rise/run) to graph more points.
Connect the points.
- With a solid boundary line, if you have ≥, ≤ after solving for "y".
- With a broken boundary line, if you have >, < after solving for "y".
- Shade the graph.
- Above the boundary line, if you have >, ≥ after solving for "y".
- Below the boundary line, if you have <, ≤ after solving for "y".
- The answers are in the shaded area and on the solid line, if there is one.
y ≤ 6
2x - 3y < 4
6x + 5y < 30
y - (2/3)x ≥ -2
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