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Graphing Calculator Tutorials
Short, practical guides that assume nothing. Each one walks through the exact keystrokes, then explains what the graph is telling you — and what to do when it looks wrong.
How to Graph a Function
Graph any function on a TI-84 or online calculator. Enter the equation, set the window, read the graph — with the common mistakes that make curves look wrong.
Read tutorialHow to Graph Piecewise Functions
Graph piecewise functions with open and closed endpoints, set the correct domain restrictions, and avoid the most common graphing calculator mistake.
Read tutorialHow to Graph a Parabola
Graph a parabola from y = ax² + bx + c and from vertex form. Find the vertex, axis of symmetry, roots and direction of opening.
Read tutorialPractice while you read
Every tutorial has a matching calculator on this site. Open it in a second tab and try each step as you go — that is how the keystrokes actually stick.