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22 January, 13:27

Find the vertex for the equation:

y = 3x^2 + 18x + 30

(-3, 3)

(-3, - 51)

(3, 111)

+4
Answers (2)
  1. 22 January, 17:07
    0
    I think (-3, 3) !
  2. 22 January, 17:26
    0
    Y = 3x^2 + 18x + 30

    a = 3, b = 18, c = 30

    h = - b/2a = - 18 / 6 = - 3

    k = (4ac - b^ 2) / 4 a = (360 - 324) / 12 = 36/12 = 3

    vertex (h, k) = (-3,3)

    answer

    (-3, 3)
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