1.   Suppose y varies directly with x and y = -10 when x = 5. Write an equation relating x and y.
    A. y = 2x B. y = -2x
    C. D.
    Hint

  2.   Suppose y varies directly with x and y = 14 when x = 3.5. Write an equation relating x and y.
    A. B. y = -4x
    C. D. y = 4x
    Hint

  3.   Suppose y varies directly with x and when Write an equation relating x and y.
    A. B.
    C. D.
    Hint

  4.   Suppose y varies directly with x and y = 24 when x = 8. Write an equation relating x and y.
    A. y = -3x B. y = 3x
    C. D.
    Hint

  5.   The direct variation equation y = 19.99x gives the total cost y of x DVDs at a store. Find the total cost of 5 DVDs.
    A. $99.95 B. $119.94
    C. $94.95 D. $99.80
    Hint



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