Question 93929
y=2x+3 (red line)
y=2x+1 (green line)
{{{ graph( 300, 200, -6, 5, -10, 10, y = 2x +3, y = 2x +1) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions y = 2x +3 and y = 2x +1). 
y=-3x-2 (red line)
y=2x/3+1 (green line)
{{{ graph( 300, 200, -6, 5, -10, 10, y = -3x -2, y = 2x/3 +1) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions y = -3x -2 and y = 2x/3 +1).