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Ratios and proportional relationships.

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common core resources /mathematical content standards /standards by strand /ratios and proportional relationships /

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Direct Variations

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Proportional relationships / Direct variation

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How can we determine if two variables are in a proportional relationship or not? If you write a table of the values of the two variables, when one variable increases by some certain amount, the other should also increase by some certain amount.

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Ratios are proportional if they represent

the same relationship.