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Mathematics
Mathematics
Problem
For what value of
k
k
k
the points
(
k
,
2
−
2
k
)
(k, 2-2k)
(
k
,
2
−
2
k
)
,
(
−
k
+
1
,
2
k
)
(-k+1, 2k)
(
−
k
+
1
,
2
k
)
and
(
−
4
−
k
,
6
−
2
k
)
(-4-k, 6-2k)
(
−
4
−
k
,
6
−
2
k
)
are collinear?
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