Is y – x positive?

(1) y > 0 - clearly insufficient

(2) x = 1 – y

chetan2u, is my approach correct? If yes, is it safe to approach such problems in this manner?

(Thank You )

statement 2: x = 1 – y

adding -y on both sides

x-y = 1-2yif x-y is negative then y-x is positive.

case 1 :if y = 0,1,... , x-y is negative, y-x is positive

case 2: if y= negative , x-y is positive, y-x is negative

case 3: if 0<y<1, (x-y) is positive , y-x is negative

1 &2 => eliminates case2.

still insufficient

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Hit Kudus if this has helped you get closer to your goal, and also to assist others save time. Tq