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Does the data in the table represent a direct variation or an inverse variation?

Mathematics
Tutor: None Selected Time limit: 0 Hours

Does the data in the table represent a direct variation or an inverse variation? Write an equation to model the data in the table.

x    6    8    12    20

y    9    12    18   30 

                                      A.  inverse variation; xy = 1.5

                                      B.  direct variation; y = 1.5x

                                      C.  inverse variation; xy = 54

                                      D.  direct variation; y = 2/3X

Apr 25th, 2015

B. Direct variation, y = 1.5x

Check: 9/6 = 12/8 = 18/12 = 30/20 = y/x = 1.5

Apr 25th, 2015

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