\begin{equation*}
\begin{split}
\text{P}(3, 3)\rightarrow x_1 & = 3\\\\
y_1& = 3\\\\\\
\text{Q}(2, -8)\rightarrow x_2 & = 2\\\\
y_2& = -8\\\\\\
\text{Distance}& = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}\\\\
\text{Distance}& = \sqrt{(2 - 3)^2 + (-8 - 3)^2}\\\\
\text{Distance}& = \sqrt{(-1)^2 + (-11)^2}\\\\
\text{Distance}& = \sqrt{1 + 121}\\\\
\text{Distance}& = \sqrt{122}\\\\
\end{split}
\end{equation*}
