Linear Inequalities (AQA A-Level Mathematics): Flashcards

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Linear Inequalities
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Symbols used in linear inequalities instead of ==

>>, <<, \geq, \leq

Meaning of >> symbol

Greater than

Meaning of << symbol

Less than

Meaning of \geq symbol

Greater than or equal to

Meaning of \leq symbol

Less than or equal to

Rule when multiplying/dividing by negative number

Reverse the inequality sign

Type of circle for >> or << on number line

Open circle

Type of circle for \geq or \leq on number line

Closed circle

Approach for three-way inequalities

Do the same thing to all sides

When to change inequality sign direction

When multiplying or dividing by a negative

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