8. For the graph of the function, identify the axis of symmetry, vertex and the formula for the function.

A. Axis of symmetry: x = –1; Vertex: (–1, 0); f(x) = –x2 – 2x – 1

B. Axis of symmetry: x = –1; Vertex: (–1, 0); f(x) = –2x2 – 2x – 1

C. Axis of symmetry: x = –1; Vertex: (–1, –1); f(x) = –x2 – 2x – 1

D. Axis of symmetry: x = –1; Vertex: (–1, 0); f(x) = –x2 – x + 2

The answer is A. Axis of symmetry: x = –1; Vertex: (–1, 0); f(x) = –x2 – 2x – 1 or C. Axis of symmetry: x = –1; Vertex: (–1, –1); f(x) = –x2 – 2x – 1

Step-by-step explanation:

Vertex:  

(−1,0)

Focus:  

(−1,−1/4)

Axis of Symmetry:  

x

=

−

1

Directrix:  

y

=

1

4

x

y

−

3

−

4

−

2

−

1

−

1

0

0

−

1

1

−

4

Vertex:  

(

−

1

/2

,

−

1

/2

)

Focus:  

(−1/2,−5/8)

Axis of Symmetry:  

x

=

−

1

2

Directrix:  

y

=

−

3

8

x

y

−

2

−

5

−

1

−

1

−

1

2

−

1

2

1

−

5

2

−

13

Vertex:  

(

−

1

,

0

)

Focus:  

(

−

1

,

−

1

/4

)

Axis of Symmetry:  

x

=

−

1

Directrix:  

y

=

1

4

x

y

−

3

−

4

−

2

−

1

−

1

0

0

−

1

1

−

4

Vertex:  

(

−

1

/2

,

9

/4

)

Focus:  

(

−

1/2

,

2

)

Axis of Symmetry:  

x

=

−

1

2

Directrix:  

y

=

5

2

x

y

−

2

0

−

1

2

−

1

2

9

4

1

0

2

−

4

step-by-step explanation:

5×5×5+2(8)÷2(2)+3(3)

15+16÷4+9

31÷13

do 31÷13 and u will get ur answer

y = 3x+4

step-by-step explanation:

to find the slope

slope = (y2-y1)/ (x2-x1)

    = (-8-4)/ (-4-0)

    = -12/-4

  = 3

using the slope intercept form of a line

y= mx+b

we know the slope is 3

we know the y intercept is 4 ( the point where it crosses the y axis or x=0)

y = 3x+4