Problem preview
A-REI.12 Warmup M1-008-A10-V01

Graph linear inequalities and systems of linear inequalities as half-plane solution regions.

Convert a boundary and shaded side into an inequality

Problem

Analyze the boundary style and shaded half-plane in the graph below, then write the represented inequality.

Big Picture

What this problem is really about

The graph must be decoded in layers. We’ll use its intercepts to determine the boundary’s slope and equation, use the line style to decide whether equality belongs, and test a visibly shaded point to determine the inequality direction. Combining those three facts recovers the represented half-plane without guessing from the line’s downward slope.

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Four variants of this problem type
Curriculum context
Course
Math I
Standard
A-REI.12
Category
Algebra
Domain
Reasoning with Equations and Inequalities
Objective
Graph linear inequalities and systems of linear inequalities as half-plane solution regions.
Problem type
Convert a boundary and shaded side into an inequality