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19 December, 01:59

Find the range of f (x) = - 2x - 5 for the domain (-2,-1,1,2).

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Answers (2)
  1. 19 December, 02:04
    0
    The domain: {-2; -1; 1; 2}

    f (x) = - 2x - 5

    subtitute the values of x to the equation:

    f (-2) = - 2 (-2) - 5 = 4 - 5 = - 1

    f (-1) = - 2 (-1) - 5 = 2 - 5 = - 3

    f (1) = - 2 (1) - 5 = - 2 - 5 = - 7

    f (2) = - 2 (2) - 5 = - 4 - 5 = - 9

    Answer: The range: {-9; -7; -3; -1}.
  2. 19 December, 02:22
    0
    We're just going to plug in these numbers

    so for - 2

    f (-2) = 4-5 = - 1

    f (-1) = 2-5 = - 3

    f (1) = - 2-5 = - 7

    f (2) = - 4 - 5 = - 9

    (-1,-3,-7,-9)
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