Analyze exactly where one function exceeds another across chosen intervals. View tables, steps, and exports. Make inequality solving easier with structured steps every time.
| x | Example f(x) = 2x + 3 | Example g(x) = x - 4 | f(x) ≥ g(x) |
|---|---|---|---|
| -2 | -1 | -6 | Yes |
| 0 | 3 | -4 | Yes |
| 1 | 5 | -3 | Yes |
| 3 | 9 | -1 | Yes |
| 6 | 15 | 2 | Yes |
Step 1: Write both functions in linear form.
f(x) = a₁x + b₁
g(x) = a₂x + b₂
Step 2: Move all terms to one side.
f(x) - g(x) □ 0
(a₁ - a₂)x + (b₁ - b₂) □ 0
Step 3: Solve the resulting linear inequality.
If you divide by a negative coefficient, flip the inequality sign.
Step 4: Test interval values when you want a table of true and false points.
Enter the slope and intercept for the first function.
Enter the slope and intercept for the second function.
Select the inequality sign that matches your problem.
Set the interval start, interval end, and step size.
Click the solve button.
Read the simplified inequality, general solution, and interval summary.
Review the computed values table.
Use the CSV button to export the current table.
Use the PDF button to print or save the page as a PDF.
A function inequalities calculator helps you compare two expressions fast. It shows where one function is greater than, less than, or equal to another. This matters in algebra, calculus, and modeling tasks.
This page focuses on linear function inequalities. You enter two functions in slope intercept form. Then you choose the comparison sign. The calculator simplifies the statement and solves the inequality step by step.
The method is clear. First, both functions are moved to one side. Next, like terms are combined. Then the remaining linear inequality is solved for x. If division by a negative value occurs, the inequality direction changes.
The interval feature adds practical value. Many students need more than a symbolic answer. They also need a tested range. This calculator checks sample x values across your chosen interval and shows which points satisfy the condition.
The result table is useful for verification. You can inspect each x value, the first function output, the second function output, and the truth result. This supports homework checking, tutoring, and classroom demonstrations.
The export tools help with reporting. You can save the computed table as a CSV file for later review. You can also print the page or save it as a PDF. That makes documentation easier for study notes or assignments.
Function inequalities appear in many topics. They are used when comparing rates, costs, limits, profits, and thresholds. They also help explain when one model performs better than another over a domain.
This calculator keeps the layout simple. The form is easy to scan. The result appears above the form after submission. The page also includes a formula section, a usage guide, and an example table. That structure supports quick learning and reliable problem solving.
It solves inequalities between two linear functions. It also tests selected interval values and shows where the condition is true or false in a readable table.
Yes. All number inputs accept decimals. That includes slopes, intercepts, interval limits, and step size.
The sign flips when you divide or multiply both sides by a negative number. That rule is essential in every linear inequality problem.
It samples x values between your chosen start and end points. This helps you verify the symbolic answer with actual computed outputs.
This version is designed for linear functions in slope intercept form. It compares two straight line expressions and solves the reduced linear inequality.
The x-terms cancel. The result becomes a constant truth test. That means either all real numbers work or no real numbers work.
The CSV export includes the computed results table. It saves each sampled x value, both function values, and whether the inequality holds.
Use the PDF button. It opens the browser print flow, where you can print the page or save it as a PDF file.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.