The function is
.
If 
, where
and
.
Find the values of
and
.

.
.

.
Substitute
,
in
.
Then
.
The slant asympotes are
and
.
\
Graph :
\Graph the function is function
and slant asympotes are
and
.
The slant asympotes are
and
.
Graph :
\Graph the function is function
and slant asympotes are
and
.
.