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14 November, 09:38

If h (x) = - kx + 14 and h (2) = 18, find the value of k

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Answers (2)
  1. 14 November, 10:26
    0
    h (x) = - kx + 14

    18 = - k*2 + 14 since x=2

    18 = - 2k + 14

    subtract 14 from each side

    4 = - 2k

    divide by - 2

    -2 = k
  2. 14 November, 11:53
    0
    k = - 2

    evaluate h (2), equate to 18 and solve for k

    h (2) = - 2k + 14 = 18 (subtract 14 from both sides)

    - 2k = 4 (divide both sides by - 2)

    k = - 2
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