Is wxy equal to -1?
(1) w, x, and y are all negative.
(2) w + x + y = -3
I understand that to answer a question for three variables, one must have three equations. But if I combine statement 1 and 2, my only answer is w=x=y=-1 . No variable can have zero value as statement one says all three variables are negative. I thought the answer was C. Its E though. Please help
(1) w, x, and y are all negative.
(2) w + x + y = -3
I understand that to answer a question for three variables, one must have three equations. But if I combine statement 1 and 2, my only answer is w=x=y=-1 . No variable can have zero value as statement one says all three variables are negative. I thought the answer was C. Its E though. Please help
