Question 55074
You use the Pythagorean theorem to find the distance. For lines, its {{{(x1-x2)^2+(y1-y2)^2=d^2}}}

Let's plug in your numbers:

{{{(-6--1)^2 + (-5-3)^2 = d^2}}}
and do some math
{{{(-5)^2 + (-8)^2 = d^2}}}
{{{25+64 = d^2}}}
{{{89 = d^2}}}
{{{sqrt(89) = d}}}

Ok! There ya have it. I don't have a calculator handy, so I'll let you punch the buttons to figure out the answer to a hundredth.