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Byju's Answer
Standard X
Mathematics
Section Formula
Let A-6, -5 a...
Question
Let A(-6, -5) and B(-6, 4) be the two points such that a point P on the line AB satisfies AP = (2/9) AB.
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Solution
AP = (2/9) AB
9AP = 2(AP+PB)
9AP = 2AP + 2PB
9AP – 2AP = 2PB
7AP = 2PB
AP/AB = 2/7
AP:PB = 2:7
So P divides the line segment in the ratio 2:7
Section formula
=
l
x
2
+
m
x
1
l
+
m
,
l
y
2
+
m
y
1
l
+
m
l = 2, m = 7
= [(2(-6)+7(-6)]/(2+7), [(2x(4)+7(-5)]/(2+7)
=
−
12
−
42
2
+
7
,
8
−
35
2
+
7
=
−
12
−
42
9
,
8
−
35
9
= -54/9, -27/9
=
−
54
9
,
−
27
9
= (-6, -3)
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3
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