Question 661656
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
                  {{{-2*0+y=1}}}    {{{-2x+0=1}}}     
-2x+y=1     (x,y) point (0,1)   and (-1/2,0) on this Line
                  {{{-4*0+2y=-8}}}    {{{-4x+2*0=-8}}}     
-4x+2y=-8    (x,y) point (0,-4)   and 2,0) on this Line
Plot points and connect with respective Lines
Lines do not Intersect:  NO solution for this linear system
{{{drawing(300,300,   -6, 6, -6, 6,  grid(1),
circle(0, 1,0.3),
circle(-.5, 0,0.3),
circle(2, 0,0.3),
circle(0, -4,0.3),
graph( 300, 300, -6, 6, -6, 6,0, 2x+1, 2x-4))}}}
-2x+y=1  0r  y = 2x+1
-4x+2y=-8
-4x + 2(2x+1) = -8
-4x + 4x + 2 = -8
           2 &#8800; -8   NO solution for this linear system