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mathleaks.com

mathleaks.com

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Rule

Concept

Rule

A rule is the relationship between two quantities. For example, a student's weekly allowance is $10$ USD. The relation between the amount of money $y$ after $x$ weeks can be expressed as: $y = 10 x .$ For example, the rule can be used to calculate the amount of money the student earned after $4$ weeks, $10 \cdot 4 = 40 USD .$