Find the ratio in which the line segment joining the points (-3,10) and (6, -8) is divided by (-1,6)
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Answer: 1) The required ratio is 3 : 7
2) The point of division is (-1.5,0)
Step-by-step explanation:
Since, the point of division lies on the x axis,
Hence, the y-coordinate of the point of division = 0,
Let the ratio in which the x-axis divides the line segment having endpoints (3,-3) and (-2,7) is m:n,
By the section formula,
\frac{7\times m+(-3)\times n}{m+n}=0
m+n
7×m+(−3)×n
=0
\frac{7m-3n}{m+n}=0
m+n
7m−3n
=0
7m-3n=07m−3n=0
7m=3n7m=3n
m:n=3:7m:n=3:7
Hence, the ratio is 3 : 7,
Now, again by the section formula,
The coordinates of the point that divides are,
( \frac{3\times -2+7\times 3}{3+7}, 0)(
3+7
3×−2+7×3
,0)
(\frac{-6+21}{10},0)(
10
−6+21
,0)
(\frac{15}{10},0)(
10
15
,0)
(1.5,0)(1.5,0)
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