help pwease?! confused... Which ordered pair is a solution for this system of inequalities? 2x + 3y 1 and y

Question

help pwease?! confused...

Which ordered pair is a solution for this system of inequalities?

2x + 3y > 1 and y < 5/4 x - 1


(3, 9)
		
(-4, 2)
		
(8, -1)
		
(-2, -5)

anonymous · Answer

just plug in the numbers and so which works out

helder_edwin · Answer

did u do what @Math_Is_Confusing123 suggested?

anonymous · Answer

yes but still sort of confused

anonymous · Answer

sorry im a little slow T.T lmao

helder_edwin · Answer

for instance (3,9)=(x,y) then the firrst inequality would say
$$ 2x+3y=2\cdot3+3\cdot9=6+27=36 $$
is 36>1? 
and the seconde inequality could be rewritten as
$$ 0<5/4x-y-1 $$
so
$$ 5/4x-y-1=5/4\cdot3-9-1=15/4-10=-25/4 $$
is -25/4>0?

anonymous · Answer

OH i think i understand. thanks i just needed some sort of explination ! thank you very much ^^~

helder_edwin · Answer

u r welcome