Question 132375
y=2x (red line)
y=-x+3 (green line)
{{{ graph( 300, 200, -6, 5, -10, 10, 2x, -x +3) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions 2x and -x +3). 
SOLUTION (1,2)