Interpret Absolute Value Functions as Piecewise

What would the piecewise function: $$y=\left\{\begin{matrix} x+3\,\,\,\,\text{if}\,\,\,\,x\geq0\\-x+3\,\,\,\,\text{if}\,\,\,\,x<0\end{matrix}\right.$$ look like as an absolute value function?