Pre-Calculus/Trigonometry

Help Me, Please


Here is a table of values for y = f(x).

x: 0, 5, 10, 15, 20, 25, 30, 35, 40

f(x): 5, 6, 7,8, 9, 10, 11, 12, 13


Mark the statements that are true.



A. f(5) = 6

B. The domain for f(x) is the set {5, 6, 7, 8, 10, 11, 12, 13}.

C. The range for f(x) is all real numbers.

D. f(15) = 8

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  1. A is true because the 2nd entry for x is 5, and the 2nd entry for f(x) = 6

    Now for the others,
    the domain is the set of x values.
    The range is the set of f(x) values.
    D is just like A.

    That should help some.

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    posted by Steve
  2. okay, thanks!

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