Question 1004600
x-2y=1 & x+2y=1 
start with standard form for each equation
y = (x/2) - (1/2) - red line in graph
y = (-x/2) + (1/2) - green line in graph
the graph for the two equations is
{{{ graph( 300, 200, -6, 5, -6, 5, (x/2)-(1/2), (-x/2)+(1/2)) }}}
solution is the point (1, 0), that is, x=1 and y=0