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10.
Which equation is represented by the graph?



A. y = 1/2x^2 - 2x + 1

B. y = x2 − 4x + 1

C. y = -1/2x^2 - 2x + 1

D. y = −x2 − 4x + 1

10 Which equation is represented by the graph A y 12x2 2x 1 B y x2 4x 1 C y 12x2 2x 1 D y x2 4x 1 class=

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Answer:

D. y = −x2 − 4x + 1

Step-by-step explanation:

Graph the parabola using the direction, vertex, focus, and axis of symmetry.

Direction: Opens Down

Vertex:  ( − 2 ,  5 )

Focus:  ( − 2 ,  19 /4 )

Axis of Symmetry:  x= − 2

Directrix:  y = 21 /4

x                     y

− 4                   1

− 3                   4

− 2                   5

− 1                    4

0                     1

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