Graphers and diagrams for the topics where a picture does the explaining. Free, no account, nothing to download — and every answer is exact rather than a rounded decimal, because the grid-in wants the exact value.
A system of two linear equations has one solution, no solution, or infinitely many — and which one it is depends only on whether the two lines have the same slope, and if they do, whether they are the same line. Drag either line below and watch the count change.
Open the toolA parabola's three forms are the same curve written three ways, and each one hands you a different fact for free: vertex form gives the vertex, factored form gives the roots, standard form gives the y-intercept. Move the sliders below and watch all three rewrite themselves at once.
Open the tool2 of 22 graphable topics on the Digital SAT maths syllabus have a public tool. The rest are listed here rather than published as empty pages — each one ships when there is a working simulation behind it and the maths has been written out.
Something missing that a picture would fix? Ask for it, or read how the rest of Preptics works.
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