1.   If y varies directly as x and y = 21 when x = 5, find x when y = 42.
    A. 10 B. 4.2
    C. 5 D. 21
    Hint

  2.   Suppose y varies directly as x, and y = -319 when x = 29. Write a direct variation equation that relates x and y.
    A. y = -11x B. y = 11x
    C. D.
    Hint

  3.   Suppose y varies directly as x, and y = -65 when x = -26. Write a direct variation equation that relates x and y.
    A. B.
    C. D.
    Hint

  4.   Use the direct variation equation y = 22x to find x when y = 88.
    A. B.
    C. x = 4 D. x = -4
    Hint

  5.   If Dale Jarrett drives his car 1760 feet on the racetrack in 6 seconds, about how long will it take him to drive 2640 feet, a half mile?
    A. 6 minutes, 40 seconds B. 18 minutes
    C. 9 seconds D. 18 seconds
    Hint



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