yusufamal60 yusufamal60

30-01-2021
Mathematics

contestada

What is the x value of the vertex of f(x) = 2x^2 - 4x + 9

Respuesta :

clarch19 clarch19

30-01-2021

Answer:

(1, 7)

Step-by-step explanation:

a = 2, b = -4, c = 9

x = -b/2a

x = 4/2(2)

x = 1

plug 1 in for 'x' into 2x² - 4x + 9 to get the y-value

2(1) - 4(1) + 9

2 - 4 + 9 = 7

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