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Mathematics 54 Online
OpenStudy (anonymous):

Math help?

OpenStudy (anonymous):

point a is located at (1, 5) and D is located at (3, 7). find the coordinate of the point that lies half way between A and D.

OpenStudy (danjs):

The midpoint on a line connecting 2 points , is just the sum of the coordinates divided by 2

OpenStudy (danjs):

(x1+x2)/2 and (y1+y2)/2

OpenStudy (anonymous):

Ok give me one minute to solve :)

OpenStudy (danjs):

Ill do the X real fast, you do the Y... midpoint of the x coordinate (1 + 3) / 2 = 4/2 = 2

OpenStudy (danjs):

Midpoint so far (2, y)

OpenStudy (anonymous):

5=7=12/2=6 Sooo, (2, 6)

OpenStudy (danjs):

you have the point right, all those = signs are not though

OpenStudy (danjs):

i know you meant +

OpenStudy (danjs):

(5+7)/2 = 12/2 = 6

OpenStudy (anonymous):

yeah haha opps

OpenStudy (anonymous):

yes

OpenStudy (danjs):

\[midpoint = (\frac{ x1+x2 }{ 2 } ~,~\frac{ y1+y2 }{ 2 })\]

OpenStudy (anonymous):

We only have one coordinate though, do I use the original ones?

OpenStudy (anonymous):

@DanJS

OpenStudy (danjs):

That is the midpoint formula , given 2 points (x1,y1) and (x2,y2)

OpenStudy (anonymous):

sorry I see now haha my answer choices arent that though.

OpenStudy (anonymous):

I have (-3, 4) (-1, 6) (1, 6) And (3, 4)

OpenStudy (danjs):

the average of the x coordinates, and average of the y coordinates

OpenStudy (anonymous):

so would it be 1,6?

OpenStudy (danjs):

can you type the original 2 points out again please

OpenStudy (anonymous):

A is located at (1, 5), and D is located at (−3, 7)

OpenStudy (danjs):

oh, it is a -3, you had it as +3 originaly

OpenStudy (anonymous):

yeah, sorry haha

OpenStudy (danjs):

\[midpoint = (\frac{ 1+(-3) }{ 2 }, \frac{ 5+7 }{ 2 })\]

OpenStudy (danjs):

(-2/2 , 12/2) (-1 , 6)

OpenStudy (danjs):

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