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4. If y varies directly as x and y = 72 when x = 6 find y when x = 4.
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4. If y varies directly as x and y = 72 when x = 6 find y when x = 4.

User Pzecevic
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You would do 72 / 6 to find how many y per x which is 12, and multiply that which is 48.
User Jorgel
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