Answer
$\sqrt {13} $
Work Step by Step
To find the distance between $(1,-6)$ and $(-1,-3)$,
we use the distance formula: $d=\sqrt {(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}}$.
We plug in the given $x$ and $y$ values: $d=\sqrt {(-1-1)^{2}+(-3-(-6))^{2}}$.
We then simplify to arrive at the answer: $d=\sqrt {(-2)^{2}+3^{2}}=\sqrt {13} $.