Graphing Calculator
Plot any equation or inequality. Free, no sign-up.
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Questions
What can I plot?
Functions (y = sin x), equations in x and y (x² + y² = 25), vertical curves (x = y²), inequalities (y ≤ x + 2, shaded) and points like (2, 3). Letters other than x and y become sliders, so y = a·x² + b gets sliders for a and b.
How do I find roots and intersections?
They're marked automatically as grey dots. Hover over or tap a dot to see its coordinates and whether it's a root, a minimum, a maximum, the y-intercept or an intersection.
Does it use degrees or radians?
Radians by default, like most graphing calculators. Switch to degrees with the toggle above the graph.