Question 411143
{{{(0-5)^2 + (b - 5)^2 = (0 - 6)^2 + (b--5)^2}}}

{{{25 + b^2 - 10b + 25 = 36 + b^2 + 10b + 25}}}

{{{50 - 10b = 61 + 10b}}}

-11 = 20b 

==> b = -11/20