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Mathematics
Problem
13. In what ratio, the line joining
(
−
1
,
1
)
(-1,1)
(
−
1
,
1
)
and
(
5
,
7
)
(5,7)
(
5
,
7
)
is divided by the line
x
+
y
=
4
x+y=4
x
+
y
=
4
?
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