Find the Vertex of the Graph of the Quadratic Function $f ( x ) = 2 x ^ { 2 } + 8 x$

Multiple Choice

Find the vertex of the graph of the quadratic function. Find any intercepts and graph the function.
- $f ( x ) = 2 x ^ { 2 } + 8 x$

A) Vertex: $( 0,8 )$ ;
x-intercepts: none;
y-intercept: $( 0,8 )$

B) Vertex: $( - 2 , - 8 )$ ;
$x$ -intercepts: $( 0,0 )$ and $( 4,0 )$ ;
$\mathrm { y }$ -intercept: $( 0,0 )$

C) Vertex: $( 0 , - 8 )$ ;
$x$ -intercepts: $( - 2,0 )$ and $( 2,0 )$ ;
$y$ -intercept: $( 0 , - 8 )$

D) Vertex: $( 2 , - 8 )$ ;
$x$ -intercepts: $( 0,0 )$ and $( 4,0 )$ ;
$y$ -intercept: $( 0,0 )$