1.   Choose the graph that is not a function.
    A. B.
    C. D.
    Hint

  2.   Choose the relation that is a function.
    A. B.
    C. D.
    Hint

  3.   Given the function f(x) = x2 + 9, find f(-3).
    A. 12 B. 0
    C. 6 D. 18
    Hint

  4.   Is the relation shown in the graph a function? Why or why not?
   
    A. No, the relation contains the ordered pairs (3, -1) and (3, 2).
    B. Yes, the relation contains very few ordered pairs.
    C. No, the relation contains the ordered pairs (0, -1) and (3, -1).
    D. Yes, the ordered pairs (-3, 2), (-1, 1), and (3, -1) form a straight line.
    Hint

  5.   Given find
    A. 6 B. 3
    C. -3 D. -6
    Hint



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