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Mathematics
Mathematics
Problem
Consider the points
P
(
2
,
−
1
,
3
)
P(2,-1,3)
P
(
2
,
−
1
,
3
)
,
Q
(
5
,
1
,
7
)
Q(5,1,7)
Q
(
5
,
1
,
7
)
and
R
(
11
,
5
,
15
)
R(11,5,15)
R
(
11
,
5
,
15
)
. a. Show that
P
P
P
,
Q
Q
Q
and
R
R
R
are collinear. b. In what ratio does
Q
Q
Q
divide the segment
P
R
PR
P
R
?
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