Find a Formula for the Function Graphed $f ( x ) = \left\{ \begin{array} { l l } 4 , & x < 0 \\ x , & x \geq 0 \end{array} \right.$

Multiple Choice

Find a formula for the function graphed.
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A) $f ( x ) = \left\{ \begin{array} { l l } 4 , & x < 0 \\ x , & x \geq 0 \end{array} \right.$
B) $f ( x ) = \left\{ \begin{array} { l l } 4 , & x \leq 0 \\ - x , & x > 0 \end{array} \right.$
C) $f ( x ) = \left\{ \begin{array} { l l } 4 , & x < 0 \\ - x , & x \geq 0 \end{array} \right.$
D) $f ( x ) = \left\{ \begin{array} { l l } 4 , & x < 0 \\ - 4 x , & x \geq 0 \end{array} \right.$