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Graphing Inequalities by W. Gary Martin

Graphing Inequalities by W. Gary Martin
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2017-11-28 14:14
Coordinate GeometryInequalityGeometric Construction
This example demonstrates how to graph the solution set of linear inequalities in a coordinate system. Key math concepts include inequalities, linear equations, coordinate geometry, and geometric constructions. Construction highlights involve using GeoGebra commands like Textfield, If, SelectedElement, Polygon, and objects such as rel, g, f_1, A to visualize inequality regions. Suitable for high school students learning to plot inequality graphs.

GeoGebra Commands & Parameters

  1. Textfield(f_1) → ls
  2. Textfield(g) → rs
  3. If(rel ≟ 1, f_1(x, y) < g(x, y), rel ≟ 2, f_1(x, y) ≤ g(x, y), rel ≟ 3, f_1(x, y) ≥ g(x, y), f_1(x, y) > g(x, y)) → d
  4. SelectedElement(ListRel) → ineq
  5. Polygon(B, C, D, E) → box, b, c, f, e