Linear equations and inequalities
Calculate the zero of a function, solve a linear equation or inequality, and see the step-by-step solution with a graph.
Use the linear function calculator to find the zero, solve a linear equation or inequality, and see the solution on a graph.
Enter data
You can enter your own coefficients or generate an example for practice.
Theory and examples
Understand linear functions step by step
The calculator helps you find the result, while short lessons show where that result comes from. Start with the basics or go straight to the graph, formula, or zero of a function.
Linear function from scratch
The simplest explanation of what a linear function is and how to read its formula.
FormulaLinear function formula
What the numbers a and b mean in y = ax + b and how they affect the line.
GraphLinear function graph
How to draw a line from a table, two points, or directly from the formula.
ZeroZero of a linear function
How to find the X-axis intercept and what the result of ax + b = 0 means.