Question 101104
4X-Y=2 OR Y=-4X +2 (RED LINE)
-16X+4Y=-5 OR 4Y=16X-5 OR Y=16X/4-5/4 OR Y=4X-5/4 (GREEN LINE)
{{{ graph( 300, 200, -6, 5, -10, 10, y = -4x+2, y = 4x -5/4 ) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions y = -4x +2 and y = 4x -5/4). 
x=1/2 & y=-3/4