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13 March, 17:04

For f (x) = - 2x+9, what is x when f (x) = 4

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Answers (2)
  1. 13 March, 20:15
    0
    2.5

    Step-by-step explanation:

    -2x + 9 = 4

    -2x = - 5

    x = 2.5
  2. 13 March, 20:49
    0
    when f (x) = 4, the answer is 1

    Step-by-step explanation:

    f (x) = - 2x + 9

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

    = - 8 + 9

    = 1
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