The equations are
and
.
Solve equation (1) for
.
Consider
.

Solve equation (2) for
.
Consider
.
The equation (2) can be written in quadratic form as
.
Compare the equation with the standard form of quadratic equation
.
, and
.
Solutions of the quadratic equation :
.
.
Draw a coordinate plane.
\Graph the functions
and
in the same window.
Graph :
\
Observe the above graph :
\The two equations intersects at four points :
,
,
and
.
The intersection points are
,
,
and
.