(a)
\The function is
and the inverse function is
.
The Domain of
is equal to the range of
and the range of
is equal to the domain of
.
Find the domain and range of
.
The function is
.
The domain of a function is all possible
- values.
Domain of a linear function is always all real numbers.
\Domain in interval notation
.
Domain of
is
.
(b)
\Range of linear function is all real numbers.
\Range of
in interval notation
.
Domain of
is
.
Range of
is
.
(c)
\Draw a coordinate plane.
\Graph the functions
and
.
Graph :
\
.
(d)
\The functions are
and
.
First derivative is slope of the function.
\Consider
.
Differentiate the function with respect to
.

Consider
.
Differentiate the function with respect to
.

Observe the two slopes, the slopes of
and
are reciprocal at the points
and
.
(a)
\Domain of
is
and domain of
is
.
(b)
\Range of
is
and range of
is
.
(c)
\
(d)
\The slopes of
and
are reciprocal at the points
and
.