Find the Vertex of the Graph of the Quadratic Function $$f ( x ) = x ^ { 2 } + 14 x - 9$$

question 102

Multiple Choice

Find the vertex of the graph of the quadratic function.
- $$f ( x ) = x ^ { 2 } + 14 x - 9$$

• A) \(( 7,138 )\)
• B) \(( 14,383 )\)
• C) \(( - 7 , - 156 )\)
• D) \(( - 7 , - 58 )\)

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