Consider the function y$=$B$($x$)$ such that B$(15)=2$ and B$^(\text{'})(15)=-(1)/(5).$ Find the slope m of the tangent line to the graph of y$=$B$($x$)$ at x$=15.$

m$=$

Find the point of intersection of y$=$B$($x$)$ and its tangent line at x$=15.$

$($x$,$y$)=(,)$

Find an equation of the tangent line of y$=$B$($x$)$ at x$=15.$