aspenlei aspenlei

17-08-2017
Mathematics

contestada

Find the vertex for the equation:
y = 3x^2 + 18x + 30
(-3, 3)
(-3, -51)
(3, 111)

Respuesta :

ayarakan1 ayarakan1

17-08-2017

I think (-3, 3 ) !!!!!!!!!!!

Answer Link

choixongdong choixongdong

17-08-2017

y = 3x^2 + 18x + 30
a = 3, b = 18, c = 30

h = -b/2a = -18 / 6 = -3
k = (4ac – b^2) / 4a = (360 - 324)/12 = 36/12 = 3

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

answer
(-3, 3)

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