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Mathematics
Mathematics
Problem
The point
P
(
4
,
y
,
−
1
)
P(4,y,-1)
P
(
4
,
y
,
−
1
)
is
6
6
6
units away from the origin. If
y
<
0
y<0
y
<
0
, determine the value of
y
y
y
. a)
−
21
-\sqrt{21}
−
21
b)
−
19
-\sqrt{19}
−
19
c)
19
\sqrt{19}
19
d)
−
2
5
-2\sqrt{5}
−
2
5
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