Question 906301
(1/3)^x Green
 -2(1/3)^x-2 Blue
{{{drawing(300,300,   -6, 6, -6, 6, grid(1),
graph( 300, 300, -6, 6, -6, 6,0, (1/3)^x, -2(1/3)^x-2) )}}}