The function is
.
The points are in the form of
.
Observe the graph:
\The points on the graph of the function is
,
and
.
(a).
\Solve
.
The point
is on the graph of the function.
The value of the
at
is
.
(b)
\Solve
.
The point
is on the graph of the function.
The value of the
at
is
.
(c)
\Solve
.
The point
is on the graph of the function.
The value of the
at
is
.
(d)
\Solve
.
The point
is on the graph of the function.
The value of the
at
is
.
\
The value of
coordinate of the graph
is greater than
, when the value of
coordinate is greater than
.
Hence the solution for
is
or
.
(e)
\Solve
.
The point
is on the graph of the function.
The value of the
at
is
.
The value of
coordinate of the graph
is below
, when the value of
coordinate smaller than
.
Hence the solution for
is
or 
(f)
\Solve
.
The point
is on the graph of the function.
The value of the
at
is
.
The point
is on the graph of the function.
The value of the
at
is
.
The value of
coordinate of the graph
is in between
and
, when the value of
coordinate are in between
and
.
Hence the solution for
is
or
.
(a)
.
(b)
.
(c)
.
(d)
or
.
(e)
or
.
(f)
or
.