Question 401558
i.

{{{y = -x-2}}}...............red line

ii. 

{{{y-2x=4}}}..or..{{{y=2x+4}}}.......green line

iii.

{{{y-x=-2}}}...or...{{{y=x-2}}}........blue line


{{{ graph( 500, 500, -10, 10, -10, 20, -x-2, 2x+4,x-2) }}}