What is the value of y?
(1) 3|x2 – 4| = y – 2
(2) |3 – y| = 11
OA: C
[spoiler]state 1: y >= 2
state 2: y = 11 or y = -8
=> correct answer is C[/spoiler]
tough question
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(1) 3|x2 – 4| = y – 2
This first statement tells us that the left side of the equation is a non-negative number. We do not have X in the rest of the question so
y-2>0
(2) |3 – y| = 11
a) 3-y = 11 , this gives a negative y
b) y-3 -11 , this gives us a positive y
Since we know y can not be negative, we can choose (C)
This first statement tells us that the left side of the equation is a non-negative number. We do not have X in the rest of the question so
y-2>0
(2) |3 – y| = 11
a) 3-y = 11 , this gives a negative y
b) y-3 -11 , this gives us a positive y
Since we know y can not be negative, we can choose (C)
LGTCH
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What is the value of y?
(1) 3|x2 – 4| = y – 2
(2) |3 – y| = 11
from 2)
y = -8
y = 14
insuff
from 1)
no idea about the value of y but know its sign
insuff
from 1) & 2)
we know y has to be positive for first equation
Go with C
(1) 3|x2 – 4| = y – 2
(2) |3 – y| = 11
from 2)
y = -8
y = 14
insuff
from 1)
no idea about the value of y but know its sign
insuff
from 1) & 2)
we know y has to be positive for first equation
Go with C
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