Express the set   $\displaystyle {W}={\left\lbrace{y}{\mid}{y}<-{8}{\quad\text{or}\quad}{y}>{7}\right\rbrace}$ using interval notation. Use "U" for $\displaystyle {\quad\text{or}\quad}$.

$\displaystyle {y}\in$

Note: The notation $\displaystyle {y}\in$ means that $\displaystyle {y}$ is in the set