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

  2.   A direct variation equation has (-2, 4) and (n, -8) as solutions. Find the missing value.
    A. 1 B. 16
    C. 4 D. -2
    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. x = -4 B.
    C. 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. 9 seconds B. 6 minutes, 40 seconds
    C. 18 seconds D. 18 minutes
    Hint



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