Question 80266
x-y=4, -y=-x+4, y=x-4 [red line]
3x+2y=7, 2y=-3x+7, y=-3x/2+7/2 [green line]
{{{ graph( 300, 200, -6, 5, -10, 10, y = x -4, y = -3x/2 +7/2) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, y = x -4 and y = -3x/2 +7/2). 
ANSWER (3,-1)