Question 323711
<pre><b>

Intersection is two points
{{{drawing(400,400,-1,6,-1,6,

red(line(0,5,2,0), line(2,0,5,5)), green(line(3,0,2.5,5), line(3,0,4,5))
)}}} 


Intersection is three points:
{{{drawing(400,400,-1,6,-1,6,

red(line(0,5,2,0), line(2,0,5,5)), green(line(3,0,0,3), line(3,0,4,5))
)}}} 


Intersection is four points:
{{{drawing(400,400,-1,6,-1,6,

red(line(0,5,2,0), line(2,0,5,5)), green(line(3,0,0,3), line(0,3,5,3))
)}}}

intersection is NO points (empty set)
{{{drawing(400,400,-1,6,-1,6,

red(line(0,5,2,0), line(2,0,3,5)), green(line(3,0,5,5), line(3,0,6,3))
)}}}

Edwin</pre>