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12.

Which of the following equations describes the graph?
A. y= 1/2x^2 - 2x - 1
B. y= 2x^2 + 2x - 1
C. y= 2x^2 - 2x - 1
D. y= 1/2x2 - 2x + 1

12. Which of the following equations describes the graph? A. y= 1/2x^2 - 2x - 1 B-example-1
User Dodbrian
by
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1 Answer

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Answer:

D. y= 1/2x2 - 2x + 1

Explanation:

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

Direction: Opens Up

Vertex:

( 2 , − 3 )

Focus:

( 2 , − 5 /2 )

Axis of Symmetry:

x = 2

Directrix:

y

=

7

2

x

y

0

1

1

5

2

2

3

3

5

2

4

1

_____________

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

Direction: Opens Up

Vertex:

( − 1 /2 , − 3/ 2 )

Focus:

( − 1 /2 , − 11 /8 )

Axis of Symmetry:

x = − 1/ 2

Directrix:

y

=

13

8

x

y

2

3

1

1

1

2

3

2

1

3

2

11

____________

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

Direction: Opens Up

Vertex:

(

1

2

,

3

2

)

Focus:

(

1

2

,

11

8

)

Axis of Symmetry:

x

=

1

2

Directrix:

y

=

13

8

x

y

2

11

1

3

1

2

3

2

1

1

2

3

___________

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

Direction: Opens Up

Vertex:

(

2

,

1

)

Focus:

(

2

,

1

2

)

Axis of Symmetry:

x

=

2

Directrix:

y

=

3

2

x

y

0

1

1

1

2

2

1

3

1

2

4

1

12. Which of the following equations describes the graph? A. y= 1/2x^2 - 2x - 1 B-example-1
12. Which of the following equations describes the graph? A. y= 1/2x^2 - 2x - 1 B-example-2
12. Which of the following equations describes the graph? A. y= 1/2x^2 - 2x - 1 B-example-3
12. Which of the following equations describes the graph? A. y= 1/2x^2 - 2x - 1 B-example-4
User Btav
by
8.0k points

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