Graphing Inequalities Calculator
Solve a linear inequality, visualize its solution, and understand the working with step-by-step explanations.
TRY AN EXAMPLE
The graph updates as you type. Press Calculate Inequality to confirm the solution and view its working.
Your solution will appear here
Enter an inequality and press Calculate Inequality to see the confirmed solution and its explanation.
Graph
y > 2x + 1How to graph an inequality
- Enter a linear inequality, such as
y > 2x + 1. - Rewrite the inequality to identify its boundary line.
- Use a dashed boundary for strict inequalities and a solid boundary for inclusive inequalities.
- Shade above or below the line according to the inequality sign after isolating y.
Understanding boundary lines
A strict inequality, such as y > x + 1, does not include points on its boundary. An inclusive inequality, such as y ≤ x + 1, includes points on the boundary.
This calculator supports linear expressions in x and y, and one-variable linear inequalities. It does not currently solve compound inequalities or absolute-value inequalities.
Common input questions
Why is the boundary dashed or solid?
Use a dashed line for < or > because
the boundary is excluded. Use a solid line for ≤ or
≥ because the boundary is included.
Can I graph a one-variable inequality?
Yes. Enter an inequality such as 2x + 3 <= 11, then
use the
number-line calculator
to focus on its endpoint and interval direction.