seashell
Find the coordinates of the other endpoint when you are given the midpoint and one of the endpoints. Answer in terms of a decimal rounded to the nearest tenth or an improper fraction in simplest form.
P1 M P2
(3, 5) (-2, 0) ( , )
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seashell
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please teach me step by step
princeofwetlot
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midpoint of x = \(\Large \frac{x_1 + x_2}{2}\)
princeofwetlot
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midpoint of y = \(\Large \frac{y_1 + y_2}{2}\)
princeofwetlot
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okay...midpoint of x means x coordinate of the midpoint...what is the x coordinate of your midpoint?
seashell
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0
-2
princeofwetlot
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now...what is the x coordinate of one of the endpoints?
seashell
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0
3
princeofwetlot
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so... \[\large -2 = \frac{3 + x_2}{2}\] got that? i just substituted
seashell
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ohhhhhhh
seashell
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:D yes!
princeofwetlot
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so i assume you can do the rest?
seashell
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then i do the same for y?
princeofwetlot
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yes
seashell
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thanks!!!!
princeofwetlot
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you're welcome