If xy+k=k and x cannot equal 0, which of the following must be true?
(A) x>y
(B) x+y=0
(C) y=0
(D) |x-y|=0
(E) xy=1
RUMNI Wrote:If xy+k=k and x cannot equal 0, which of the following must be true?
(A) x>y
(B) x+y=0
(C) y=0
(D) |x-y|=0
(E) xy=1
Khalid Wrote:
Is the answer C,
xy + k = k
xy = 0
But x cant equal 0, thus y = 0