Essay

Recalling Graphing Rules for Linear Inequality Systems

An operations assistant is reviewing a training manual that defines the safe-entry boundary zone on a warehouse grid using the system of linear inequalities:

{y3x2y<1\left\{\begin{array}{l} y \geq 3x - 2 y < -1 \end{array}\right.

To ensure all facility layouts are drawn correctly, the assistant must recall the fundamental rules of graphing. Write an essay that states the precise rules for:

  1. Determining whether the boundary line for each inequality should be drawn solid or dashed.
  2. Determining which side of each boundary line should be shaded (specifically explaining how a test point like (0, 0) is used to make this decision).
  3. Determining whether the intersection point of the two boundary lines is included in the final solution region, and why.

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Updated 2026-06-17

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