\"\"

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The direct variation formula is  \"\".

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\"\"              (Substitute \"\")

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\"\"                  (Multiply:  \"\")

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\"\"          (Divide each side by 12)

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\"\"                  (Cancel common terms) 

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\"\"                     (Divide:  \"\")

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\"\"

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The direct variation equation is  \"\".\"\"

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\"\"          (Substitute \"\")

\

\"\"                 (Multiply:  \"\")

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\"\"                      (Divide:   \"\")

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\"\"

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 The value of   \"\".