Question 72461
2x-y=4, -y=-2x+4
2x-y=6, -y=-2x+6 
{{{ graph( 400, 400, -10, 10, -10, 10, y = 2x -4, y = 2x-6) }}} (graph 400x400 pixels, x from -10 to 10, y from -10 to 10, of TWO functions y = 2x -4 and y = 2x -6).