Answer
$d=\sqrt{61}\approx7.81$
Work Step by Step
$(x_{1},y_{1}) = (1,4)$ and $(x_{2},y_{2}) = (-5,-1)$
Then apply the distance formula ,ie,
$d = \sqrt {(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}}$
$d = \sqrt {(-5-1)^{2}+(-1-4)^{2}}$
$d = \sqrt {(-6)^{2}+(-5)^{2}}$
$d = \sqrt {36+25} = \sqrt{61}$
