Find the Vertex and Axis of Symmetry of the Graph $f ( x ) = x ^ { 2 } + 4 x$

question 75

Multiple Choice

Find the vertex and axis of symmetry of the graph of the function.
- $f ( x ) = x ^ { 2 } + 4 x$

• A) \(( - 2 , - 4 ) ; x = - 2\)
• B) \(( 2 , - 4 ) ; x = 2\)
• C) \(( - 4,2 ) ; x = - 4\)
• D) \(( 4 , - 2 ) ; x = 4\)

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