Core + Extended 3–5% of exam · Paper 2, 3, 4

IGCSE Maths: Inequalities

Solving and graphing linear and quadratic inequalities for IGCSE Mathematics 0580.

Overview

Inequalities extend equation-solving skills to include ranges of values. Extended students must also solve quadratic inequalities and represent solution sets on number lines and coordinate grids.

Core Syllabus Topics

Reading and writing inequalities
Solving simple linear inequalities
Representing inequalities on a number line

Extended Syllabus Topics

Solving compound inequalities
Quadratic inequalities
Graphing linear inequalities in two variables
Identifying feasible regions
Integer solutions within regions

Common Mistakes to Avoid

Forgetting to flip the inequality sign when multiplying/dividing by a negative
Not using a dashed line for strict inequalities on graphs
Shading the wrong region

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Topic Details

Exam Weight: 3–5%
Papers: Paper 2, 3, 4
Difficulty: Medium
Syllabus: Core + Extended