1.   The domain of a relation is all positive integers less than 4. The range of y or the relation is 2 plus x, where x is a number of the domain. Write the relation as a table of values and as an equation.
    A. B. None of these.
    C. D.
    Hint

  2.   State the domain and the range of the relation {(1, 2), (-4, 2), and
(3, 5)}. Then state whether the relation is a function.
    A. The domain is {2, 5}, the range is {-4, 1, 3}, and the relation is not a function. B. The domain is {-4, 1, 3}, the range is {2, 5}, and the relation is not a function.
    C. The domain is {-4, 1, 3},
the range is {2, 5}, and the relation is a function.
D. The domain is {2, 5}, the range is {-4, 1, 3}, and the relation is a function.
    Hint

  3.   If j(x) = x2 + 1, find j(a + 1).
    A. a2 + 2a + 2 B. a2 + a + 1
    C. a2 + 2a + 1 D. a2 + a + 2
    Hint

  4.   State the domain of the function
    A. all real numbers except
0 and 3
B. all real numbers except 3
    C. all real numbers except
0, 1, and 3
D. all real numbers except 0
    Hint

  5.   State the domain and range of the relation. Then state whether the relation is a function.{(2,-1), (-2,4), (2,5), (3,6)}
    A. Domain {-1,4,5,6}Range {-2,2,3} The relation is not a function.
    B. Domain {-2,2,3} Range {-1,4,5,6}The relation is not a function.
    C. Domain {-1,4,5,6}Range {-2,2,3}The relation is a function.
    D. Domain {-2,2,3} Range {-1,4,5,6} The relation is a function.
    Hint



Glencoe
The McGraw-Hill Companies