Question 90428
2x=y=4 or y=-2x+4 (red line)
x+y=3 or y=-x+3 (green line)
{{{ graph( 300, 200, -6, 15, -20, 10, y = -2x +4, y = -x +3) }}} (graph 300x200 pixels, x from -6 to 15, y from -20 to 10, of TWO functions y = -2x +4 and y = -x +3).