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25 June, 09:13

Rewrite the following equation as a function of x.

4x+8y-28=0

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Answers (2)
  1. 25 June, 11:33
    0
    A function is written in terms of f (x).

    4x+8y-28=0

    Subtract 4x from each side and add 28 to each side:

    8y = - 4x + 28

    Divide each term by 8:

    y = - x/2 + 7/2

    rewrite as a function:

    f (x) = - x/2 + 7/2
  2. 25 June, 12:16
    0
    f (x) = - 2y+7

    Step-by-step explanation:

    4x+8y-28=0

    Add 28 to each side

    4x+8y-28+28=28

    4x+8y = 28

    Subtract 8y from each side

    4x + 8y-8y = 28-8y

    4x = - 8y+28

    Divide by 4

    4x/4 = -8y/4+28/4

    x = - 2y+7

    f (x) = - 2y+7
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