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lizzy2951
19.12.2020 •
Mathematics
What are the coordinates of the point on the directed line segment from (–9, -7) to (-2,7) that partitions the segment into a ratio of 3 to 4?
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Ответ:
Step-by-step explanation:
Saving the long, drawn out derivation of the formulas to find the x and y coordinates of the directed point, suffice it to say that it is:
x coordinate:
and
y coordinate:![\frac{by_1+ay_2}{a+b}](/tpl/images/1002/7027/d3938.png)
where x1, x2, y1, and y2 are the coordinates from the given points and a and b are the numbers in the ratio, namely a = 3 and b = 4. Filling in accordingly:
the x coordinate of the directed point is
the y coordinate of the directed point is
The coordinate of the point is (-6, -1). Write that down so you don't forget it.
Ответ: