roydelatorre12352 roydelatorre12352

11-11-2018
Mathematics

contestada

Determine the axis of symmetry and the vertex of the given function.
y = 2x2 − 12x + 21

Respuesta :

kdeniega45 kdeniega45

11-11-2018

ax^2+bx+c

A=2
B=12
C=21

a(x+d)^2+e

D=b/2a

D=12/2•2

D=2•6/2•2

Cancel the common factor
Then you’ll get
D= 6/2=3

E= c+b^2/4a
E=21-18
E=3

2(x+3)^2+3
A=2
H=-3
K=3

Answer: Vertex= (h,k)
=(-3,3)

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