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Graphing Inequalities on the Number Line

Graphing Inequalities on the Number Line
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2015-09-28 20:30
Coordinate GeometryInequalityGraphing
In collections CCSS HS: Algebra (Reasoning with Equations & Inequalities) CCSS HS: Algebra (Reasoning with Equations & Inequalities) CCSS HS: Algebra (Reasoning with Equations & Inequalities) Algebra: Linear Inequalities
This example demonstrates how to graph basic inequalities on a number line. It involves core math concepts like inequalities and number line representation. Constructed using GeoGebra commands/objects such as Random, Point, DynamicCoordinates, and Vector. Suitable for middle school students practicing basic inequality graphing.

GeoGebra Commands & Parameters

  1. Random(-10, 10) → a
  2. Point(b) → A
  3. Random(1, 4) → e
  4. Random(0, 1) → r
  5. DynamicCoordinates(A, round(x(A)), 1) → B
  6. Vector((x(B) + 0.15, 1), (11, 1)) → u
  7. Vector((x(B) - 0.15, 1), (-11, 1)) → v

AI Drawing Prompt Reference

Create a simple number-line inequality diagram. First generate a random point, then round its x-coordinate to an integer and place that point on a horizontal line at height 1. From a position just to the right of this marked point, draw an arrow pointing toward the right end of the line; from a position just to the left of the marked point, draw another arrow pointing toward the left end. The two arrows should represent the directions of greater-than and less-than inequalities on the number line, with a clean layout suitable for middle-school students.
The prompt above was compiled from the original drawing commands and is for reference only.