LinkBack URL
About LinkBacks
Reply With Quotex+y+z= 0
x+2y + 3z = 0
From both statements:
y+2z=0 y= -2z
substituting in statement 1:
x-2z+z=0 -> x-z=0 -> x=z
Therefore x/y= -(1/2)
answer: A
|
If x+y+z=0 and x+2y+3z=0 and y<>0, then what is x/y?
a -1/2
b -1/3
c -1/6
d 1/3
e 1/2
Official AnswerSPOILER: A
|
x+y+z= 0
x+2y + 3z = 0
From both statements:
y+2z=0 y= -2z
substituting in statement 1:
x-2z+z=0 -> x-z=0 -> x=z
Therefore x/y= -(1/2)
answer: A
|
A: x+y+z=0 hence 3x+3y+3z=0.
B: x+2y+3z=0
Let A-B, we have 2x+y=0. Hence 2x=-y.
So x/y=-1/2
Answer: A.
|
(A) is the answer
There are currently 1 users browsing this thread. (0 members and 1 guests)
Posting Permissions
Bookmarks