IS XY > 0 ?
(1) x-y > -2
(2) x-2y < -6
I dont remember how to solve simultaneous inequalities .. does any one remember the procedure
1: x - y > -2
x + 2 > y
x and y could be anything : +ve or -ve. not suff.
2: x - 2y < -6
x + 6 < 2y
x and y could be anything : +ve or -ve. also not suff.
1 and 2: now we can say x and y both are +ves. if onl y they are +ve, then 1 and 2 are possible..