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Migitmack
Group Title
One endpoint of a segment is (12,8). The midpoint is (3,18). Find the coordinates of the other endpoint.
 2 years ago
 2 years ago
Migitmack Group Title
One endpoint of a segment is (12,8). The midpoint is (3,18). Find the coordinates of the other endpoint.
 2 years ago
 2 years ago

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CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
Could use the formula, but it's easy enough to just reason through it: What number is the same distance from 3 as 12, and what number is the same distance from 18 as 8?
 2 years ago

Migitmack Group TitleBest ResponseYou've already chosen the best response.0
Can U just tell me I am kinda lazy _
 2 years ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
Nope. Stop being lazy. I will draw a picture for you though.
 2 years ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
dw:1346614090275:dw
 2 years ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
Your other option is to use the formula: \[M(x,y)=\left(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2}\right).\]
 2 years ago

cathyangs Group TitleBest ResponseYou've already chosen the best response.0
@Migitmack , @CliffSedge is explaining it quite well. Openstudy is supposed to help you study, it's not an answergenerator.
 2 years ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
M=midpoint.
 2 years ago

Migitmack Group TitleBest ResponseYou've already chosen the best response.0
I don't understand
 2 years ago

Migitmack Group TitleBest ResponseYou've already chosen the best response.0
i did the formula
 2 years ago

Migitmack Group TitleBest ResponseYou've already chosen the best response.0
but I where is the M
 2 years ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
You have the coordinates for the midpoint and one other point, so rearrange the formula to solve for what you don't know. (If you want to use the formula.. I still think just doing some elementary subtraction is more straightforward) dw:1346614542836:dw
 2 years ago

Migitmack Group TitleBest ResponseYou've already chosen the best response.0
I hoy (7.5, 72)?!!!!!?! I think I did something wrong
 2 years ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
Just look at the first picture I drew and ask yourself these questions: 1. 3 is halfway between 12 and what other number? That's your x. 2. 18 is halfway between 8 and what other number? That's your y.
 2 years ago

Migitmack Group TitleBest ResponseYou've already chosen the best response.0
Is X 9 or 7?
 2 years ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
The formula would look like this: \[M(3,18)=(\frac{12+x}{2},\frac{8+y}{2}).\] Handle the x and y equations separately: \[3=\frac{12+x}{2}, \space 18=\frac{8+y}{2}\]
 2 years ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
The distance from 3 to 12 is 9, so what number is also 9 units away from 3, but in the other direction? Use the same reasoning for y.
 2 years ago

Migitmack Group TitleBest ResponseYou've already chosen the best response.0
For Y its going to be 5?
 2 years ago

Migitmack Group TitleBest ResponseYou've already chosen the best response.0
@CliffSedge
 2 years ago

Migitmack Group TitleBest ResponseYou've already chosen the best response.0
@Cliffsedge yo is it 5 for y?
 2 years ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
Why do you think 5 for y? How did you get that number?
 2 years ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
I'm guessing you're finding the midpoint of (3,18) and (12,8) but (3,18) *is* the midpoint.
 2 years ago
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