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Negative multipliers flip inequalitiesFact

Fact

Negative multipliers flip inequalities

A negative multiplier reverses the inequality

2 min 2 steps

Multiply by a negative and an inequality switches direction. I switched directions once myself, and it's going well.

Negatives reverse inequalitiesLearn it
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Used by

Test a point; read a regionTechniquePlug the point in, then read the line and the shading
Inequality manipulationTechniqueSolve like an equation; flip for negatives