You can put this solution on YOUR website! 2x+4y=10 or 4y=-2x+10 or y=-2x/4+10/4 or y=-x/2+2.5 (red line)
3x+6y=12 or 6y=-3x+12 or y=-3x/6+12/6 or y=-x/2+2 (green line) (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions y = -x/2 +2.5 and y = -x/2 +2).