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?
1/9 , 1/3 , 3 , 9


What is the equation representing the direct variation?
y=(1,9)x y=(1/3)x y=3x y=9x