Question 1098329
-------------------
then (x,y) = ? 
-------------------


You mean, what is the intersection point?


{{{system(x+2y=0,x-2y=2)}}}

-

{{{x-2y+x-2y=0+2}}}
{{{2x+0=2}}}
{{{2x=2}}}
{{{x=1}}}
-
{{{x+2y=0}}}
{{{2y=-x}}}
{{{2y=-1}}}
{{{y=-1/2}}}
-
( 1, -1/2 )