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Writing Linear Equations Given 2 Points

Writing Linear Equations Given 2 Points
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2017-09-22 06:44
FunctionCoordinate GeometryGraphing
This example demonstrates how to write the equation of a line given two points, where the y-intercept is an integer. It generates practice problems with feedback, helping students master core concepts in coordinate geometry such as linear equations, slope, y-intercept, and the two-point form of a line. The construction utilizes GeoGebra commands and objects like Sequence, Union, RandomElement, FractionText, Random, Line, and Textfield to dynamically create problems and display results, making it suitable for middle school and above students.

GeoGebra Commands & Parameters

  1. Sequence(i, i, -10, 10, 1) → ylist
  2. Sequence(i, i, 1, 10, 1) → Xrightfinal
  3. Sequence(i, i, -10, -1, 1) → Xleftfinal
  4. Union(Xleftfinal, Xrightfinal) → Xlistfinal
  5. Sequence(i, i, -10, 10, 1) → xlist
  6. RandomElement(Xlistfinal) → a
  7. Sequence(i, i, a + 1, 10, 1) → xlist2
  8. Sequence(i, i, -10, a - 1, 1) → xlist1
  9. Union(xlist1, xlist2) → list1
  10. RandomElement(list1) → c
  11. RandomElement(ylist) → b
  12. RandomElement(ylist) → d
  13. FractionText(e) → text1
  14. FractionText(g(0)) → text8
  15. Random(-20, 20) → h
  16. RandomElement(scalarlist1) → j
  17. Line(A, B) → m
  18. RandomElement(list2) → sc
  19. FractionText(Slope[m]) → text10
  20. Union(xlist1, xlist2) → list3
  21. Textfield(f) → InputBox1