Question

Find the vertex of the parabola.

y = 2x^2+ 8x+12
a.
(2,-4)
b. (-2,4)
c. (-4,2)
d.
(4,-2)

Answer 1

b

Explanation:

y

=

2

(

x

+

2

)

2

+

4

Use the vertex form,

y

=

a

(

x

−

h

)

2

+

k

, to determine the values of

a

,

h

, and

k

.

a

=2h

=

−

2

k

=

4

Find the vertex

(

h

,

k

)

.

(

−

2

,

4

)

image of graph