You can put this solution on YOUR website! 2x=y+1
Y=2X-1 (RED LINE)
2x-y=5
Y=2X-5 (GREEN LINE) (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions 2x -1 and 2x -5).
THSE PARALLEL LINES INDICATE THAT THERE IS NO S0LUTION TO THESE 2 EQUATIONS.