Parabola
The graph of a quadratic function: vertex, standard and factored form, a table of differences, predicting graphs, zeros and quadratic inequalities.
Free, runs in the browser, no sign-in or installation.
- Subject
- Mathematics
- Area
- Algebra and Functions
- Level
- Secondary school
What you can do
- Move the sliders or drag the vertex: the vertex, standard and factored forms, the discriminant and the zeros change with the graph.
- In a table of values, compare the first and second differences to see whether growth is linear or quadratic, for a formula or your own values.
- In Predict and check, draw the graph of a given function or find the formula for a graph; the app checks the vertex and the opening.
- Solve a quadratic inequality: the parabola is green above the x-axis and red below it, and the solution is marked on the x-axis and written with intervals.
- Choose the axis range, show the grid or the axis of symmetry, and download the graph as a PNG with a white or transparent background.
Worksheets and lessons
Lessons with worksheets that use this app.
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