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finding missing endpoints: is there a way to do it algebraically?
http://www.youtube.com/watch?v=d51p_8xQQZ0
so you can draw a number line to see how far each number is from each other, but is there a faster way to do it?
 2 years ago
 2 years ago
finding missing endpoints: is there a way to do it algebraically? http://www.youtube.com/watch?v=d51p_8xQQZ0 so you can draw a number line to see how far each number is from each other, but is there a faster way to do it?
 2 years ago
 2 years ago

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satellite73Best ResponseYou've already chosen the best response.2
ignore this video. you can find the endpoint using algebra or just thinking. you have an actual problem to solve?
 2 years ago

neverforgetvivisteeBest ResponseYou've already chosen the best response.0
Endpoint: (−9, −1), midpoint: (8, 14)
 2 years ago

satellite73Best ResponseYou've already chosen the best response.2
you want algebra or think method?
 2 years ago

neverforgetvivisteeBest ResponseYou've already chosen the best response.0
or whatever you were typing
 2 years ago

satellite73Best ResponseYou've already chosen the best response.2
we can do both for first coordinate solve \[\frac{x9}{2}=8\] and for second solve \[\frac{y1}{2}=14\]
 2 years ago

satellite73Best ResponseYou've already chosen the best response.2
because midpoint you use \[\frac{x_1+x_2}{2}\] for the first coordinate and \[\frac{y_1+y_2}{2}\] for the second. so if you know the answer you can find the first or second coordinate
 2 years ago

neverforgetvivisteeBest ResponseYou've already chosen the best response.0
oh i see i got it right, you subtracted because they're negative?
 2 years ago

neverforgetvivisteeBest ResponseYou've already chosen the best response.0
thank you :'} you're very good at math don't ever stop what you're doing
 2 years ago

satellite73Best ResponseYou've already chosen the best response.2
yes i "subtracted" because both were negative. if they had been positive i would have added.
 2 years ago

satellite73Best ResponseYou've already chosen the best response.2
thank you for the compliment
 2 years ago
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