Question 80048
X+Y=-2, Y=-X-2 (THIS IS THE RED LINE)
3X-Y=10, -Y=-3X+10, Y=3X-10 (THIS IS THE GREEN LINE)
{{{ graph( 300, 200, -6, 5, -10, 10, y = -x -2, y = 3x -10) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions y = -x -2 and y = 3x -10).