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Lesson 30

# Lesson 30 - Lesson 30 Variation how one quantity...

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Lesson 30 Variation: - how one quantity changes (varies) in relation to another quantity - quantities can vary directly, indirectly, jointly or combined Direct Variation: - as the independent variable increases, the dependent variable also increases - described by the equation , where is the dependent variable, is the independent variable, is a nonzero constant, and - is known as the constant of variation or the constant of proportionality Example 1: Express the statement as a formula that involves the given variables and a constant of proportionality . is directly proportional to . If , then .

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Indirect Variation: - as the independent variable increases, the dependent variable decreases - described by the equation , where is the dependent variable, is the independent variable, is a nonzero constant, and Example 2: Express the statement as a formula that involves the given variables and a constant of proportionality . is inversely proportional to the cube root of . If , then .
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Lesson 30 - Lesson 30 Variation how one quantity...

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