Here are the answers ... Maybe this will help . 3/4 -4/3 4/3 -3/4 (you posted a math question in the english) BTW.
so its -3/4
wait a minute u mean -4/3 right
yeah isnt that was you put -its the top second one on my first reply
so just -4/3
just but if you are writing it, put it all down
m(3/4) = -1 then m=-4/3 sp <-- there you go