Question 857496
1. 
y=x-2  green
y=2x+5 blue
2. 
y=3x+2 purple
y=5x-10 gold
{{{drawing(300,300,  -10,10,-15,30, grid(1),
graph( 300, 300, -10,10,-15,30,0, x-2,2x+5, 3x+2,5x-10) )}}}