find the ratio in which the line x=0 divides line ab, a(6,8), B(-4, 6) also find coordinates of the point of intersection of ab and line x=0
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Answered by
4
Step-by-step explanation:
Let ratio be k:1
Hence
m
1
=k,m
2
=1
x
1
=1,y
1
=−5
x
2
=−4,y
2
=5
Also,
x=x,y=0
Using section formula
y=
m
1
+m
2
m
1
y
2
+m
2
y
1
0=
k+1
k×5+1×(−5)
0=
k+1
5k−5
5k−5=0
5k=5
k=1
Hence, k=1
Now,
x=
m
1
+m
2
m
1
x
2
+m
2
x
1
x=
k+1
k×(−4)+1×1
x=
1+1
1×(−4)+1×1
x=
2
−3
Hence the coordinate of point P(x,0) =P(
2
−3
,0)
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1
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