WeBWorK Standalone Renderer

The graph of a piecewise function, $f(x)$ , is depicted above. Find its equation:

$\displaystyle f(x) = \left\lbrace \begin{array}{cc} &\\ &\\ &\\ &\\ &\\ &\\ &\\ &\\ &\\ &\\ &\\ &\\ &\\ &\\ &\\ &\\ \end{array}\right.$

for $x$

for $x$

for $x$

You can earn partial credit on this problem.