The constant of variation in this case is 9, because 27 (square feet) / 3 (square yards) = 9.
The equation representing the direct variation is y = 9x.
The conversion of square feet to square yards can be represented by direct variation. Three square yards are equivalent to 27 square feet. Let y represent the number of square yards and x the number of square feet. Then y varies directly with x.
What is the constant of variation?
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What is the equation representing the direct variation?
_________
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