Question 15728
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The solutions by   @CubeyThePenguin  is INCORRECT.


I came to bring you the correct solution.



<pre>
distance = {{{sqrt((x[2]-x[1])^2 + (y[2]-y[1])^2)}}} = {{{sqrt(((-10)-(-5))^2 + (2-(-6))^2)}}} = {{{sqrt((-5)^2+8^2)}}} = {{{sqrt(25+64)}}} = {{{sqrt(89)}}} = 9.434 (rounded).    <U>ANSWER</U>
</pre>

Solved.