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Mathematics
Mathematics
Problem
3. Show that the line through the points
(
4
,
7
,
8
)
,
(
2
,
3
,
4
)
(4,7,8),(2,3,4)
(
4
,
7
,
8
)
,
(
2
,
3
,
4
)
is parallel to the line through the points
(
−
1
,
−
2
,
1
)
,
(
1
,
2
,
5
)
(-1,-2,1),(1,2,5)
(
−
1
,
−
2
,
1
)
,
(
1
,
2
,
5
)
.
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