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Writing Quadratic Functions from their Graphs

Writing Quadratic Functions from their Graphs
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2015-07-15 09:11
FunctionCoordinate GeometryGeometric Construction
This example demonstrates how to derive the quadratic function from its graph. Key mathematical concepts include quadratic functions, the relationship between graphs and equations. Construction involves GeoGebra commands such as RandomElement, Random, Textfield. Suitable for high school mathematics or teaching.

GeoGebra Commands & Parameters

  1. RandomElement({-2, -1.5, -1, -0.5, -0.3333333333333333, -0.25, 0.25, 0.3333333333333333, 0.5, 1, 1.5, 2}) → a
  2. Random(-8, 8) → r1
  3. Random(-8, 8) → r2
  4. Random(-5, 5) → h
  5. Random(-5, 5) → k
  6. RandomElement({1, 2, 3}) → b
  7. Textfield(f) → inputBox1
  8. Text(("score =" * score)) → text1
  9. Text(("Number of questions = " * problems)) → questions
  10. Text(("Accuracy = " * accu)) → accur