(a) Find the equation of the line with slope $-5$ and that contains the point $( -8 ,-4 )$. Write the equation in the form $y=mx+b$ and identify $m$ and $b$.

$m$	=
$b$	=

(b) Find the equation of the line that contains the points $( 5 ,10 )$ and $( 8 ,3 )$. Write the equation in the form $y=mx+b$ and identify $m$ and $b$.

$m$	=
$b$	=