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Byju's Answer
Standard XII
Mathematics
Ratio in Which Line Divides Segment Joining 2 Points
A line is suc...
Question
A line is such that its segment between the straight lines
5
x
−
y
−
4
=
0
and
3
x
+
4
y
−
4
=
0
is bisected at the point (1, 5).
Then the equation is
107
x
−
3
y
−
92
=
0
Enter 0 if True and
1 if False.
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Solution
5
x
−
y
+
4
=
0...
(
i
)
3
x
+
4
y
−
4
=
0
.
.
.
(
i
i
)
→
Let the required line intersect line (i) & (ii) at point
(
α
,
β
)
&
(
a
2
,
β
2
)
respectively.
5
α
1
−
β
1
+
4
=
0
→
β
1
=
5
α
1
+
4...
(
i
i
i
)
3
α
2
+
4
β
2
−
4
=
0
→
β
2
=
4
−
3
α
2
4
.
.
.
(
i
v
)
It is given that the mid point of line bet
n
(
α
1
,
β
1
)
&
(
α
2
,
β
2
)
is
(
1
,
5
)
α
1
+
α
2
2
=
1
&
β
1
+
β
2
2
=
5
→
using equation (iii) & (iv) we get
α
1
&
α
2
α
1
+
α
2
=
2
and
20
α
1
−
3
α
2
=
20
→
Solving the above two equation, we get
α
1
&
α
2
α
1
=
26
23
&
α
2
=
20
23
,
β
1
=
222
23
→
the equation on of the required line passing
through
(
1
,
5
)
&
(
α
,
β
)
is
y
−
5
=
β
1
−
5
α
1
−
1
(
x
−
1
)
∴
107
x
−
3
y
−
92
=
0
Ans
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