Function Grapher
Plot lines and parabolas and see the slope, intercepts and vertex computed live as you adjust them.
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Math tools
Interactive explorers, graphing, geometry, and reference sheets.
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A short list of favorites, updated now and then.
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Math tools
13 items
Slope Explorer
Drag two points on a grid and watch the slope and line equation — slope-intercept and point-slope — update live.
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Quadratic Explorer
See a parabola in standard, vertex and factored form at once, with a live graph and roots/vertex readouts.
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Systems Explorer
Two lines on a graph — see their intersection and the solved system live, including parallel and identical cases.
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Exponential Explorer
y = a·bˣ with live sliders — see growth vs. decay, a table of values, and an optional linear comparison.
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Inequality Grapher
Shade a linear inequality or a system of them and see the solution region update as you edit the inequalities.
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Stats Explorer
Enter a dataset and get mean, median, mode, quartiles, a histogram and a box plot, all computed live.
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Scatter Plot & Best Fit
Plot (x, y) data, fit a least-squares trend line, and read off the correlation coefficient live.
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Transformations
Translate, reflect, rotate and dilate a shape on the coordinate grid and see the transformed vertices live.
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Right Triangle Explorer
Drag the legs of a right triangle and watch a² + b² = c² prove itself with squares drawn on each side.
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Formula Sheet
A searchable high-school math reference — area, volume, coordinate geometry, algebra and finance formulas with worked examples.
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Number Converter
Convert between fractions, decimals and percents in either direction, with automatic simplification.
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Geometry Toolbox
Pick a 2D or 3D shape, enter its dimensions, and get area, perimeter, volume and surface area instantly.
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