The rational function is
.
In rational functions the denominator can not be zero.
\To find exceptional values equate denominator to zero.
\
The domain of function
is
.
.


\
is in lowest terms.
The rational function is
.
Change
to
.
.
Find the intercepts.
\To find
intercept equate numerator to
.

Find the
-intercept by substituting 
in the rational function.

The
-intercept is
.
Find the vertical asymptote by equating denominator to zero.
\
\
So the function has vertical asymptote at
.
To find horizontal asymptote, first find the degree of the numerator and degree of the denominator.
\Degree of the numerator
and degree of the denominator is
.
Oblique asymptote :
\If the degree of the numerator is grater than the degree of denominator then
\Oblique asymptote exist.
\Thus, the function has no oblique asymptote.
\The horizontal asymptote is
.
Graph :
\Graph the function with its horizontal and vertical asymptotes.
\
\ \
The zeros in the numerator is
and
.
The zeros of denominator are
and
, use these values to divide the
axis into three intervals.
.
| Interval | \ \
\
| \
\
\
| \
\
| \
| \
Number chosen \ | \
\
| \
\
\ | \
\
\
| \
| \
Value of | \
\
| \
\
| \
\
\
\ | \
| \
Location of graph \ | \
\
Above | \
\
Below \ | \
\
Above \ | \
| \
Point of graph \ | \
\
| \
\
| \
\
| \
End behavior of the graph:
\
and
.
\
and
.
Graph :
\The graph of
:

\
The graph rational function
:
