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Standard X
Mathematics
Section Formula
Find the coor...
Question
Find the coordinates of point P if P divides the line segment joining the points A(–1,7) and B(4,–3) in the ratio 2 : 3.
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Solution
Let the coordinates of point P be (x, y).
The ratio in which P divides A(–1,7) and B(4,–3) is 2 : 3.
Using the section formula we have
x
=
4
×
2
+
3
×
-
1
2
+
3
=
8
-
3
5
=
1
y
=
2
×
-
3
+
3
×
7
2
+
3
=
-
6
+
21
5
=
3
Thus, the coordinates of point P are (1, 3).
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Similar questions
Q.
(i) Find the coordinates of the point that divides the join of A(−1, 7) and B(4, −3) in the ratio 2 : 3.
(ii) Find the coordinates of the point which divides the join of A(−5, 11) and B(4, −7) in the ratio 7 : 2.
Q.
Find the ratio in which the line segment joining the points
P
(
x
,
2
)
divides the line segment joining the points
A
(
12
,
5
)
and
B
(
4
,
−
3
)
. Also find the value of
x
.
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