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

Multiple Choice

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

A) Vertex: $( 1 , - 9 )$ ;
$x$ -intercepts: $( - 2,0 )$ and $( 4,0 )$ ;
$y$ -intercept: $( 0 , - 8 )$


B) Vertex: $( - 1 , - 9 )$ ;
$x$ -intercepts: $( - 4,0 )$ and $( 2,0 )$ ;
$y$ -intercept: $( 0 , - 8 )$


C) Vertex: $( - 1 , - 9 )$ ;
x-intercepts: $( - 4,0 )$ and $( 2,0 )$ ;
y-intercept: $( 0,8 )$


D) Vertex: $( 1 , - 9 )$ ;
$x$ -intercepts: $( 2,0 )$ and $( 4,0 )$ ;
$y$ -intercept: $( 0 , - 8 )$