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Mathematics 8 Online
OpenStudy (anonymous):

Find the midpoint of the line segment whose endpoints are (-2, 5) and (4, -9). (2, -7) (1, -4) (1, -2)

jimthompson5910 (jim_thompson5910):

what are the x coordinates of the points (-2, 5) and (4, -9) ?

OpenStudy (anonymous):

-2,4

jimthompson5910 (jim_thompson5910):

add them up to get ______ (fill in the blank)

OpenStudy (anonymous):

2?

jimthompson5910 (jim_thompson5910):

then cut that in half

OpenStudy (anonymous):

1

jimthompson5910 (jim_thompson5910):

so x = 1 is the x coordinate of the midpoint

jimthompson5910 (jim_thompson5910):

follow the same steps for the y coordinate of the midpoint

jimthompson5910 (jim_thompson5910):

again the basic rule is: add up the corresponding coordinates, then divide by 2

OpenStudy (anonymous):

but -5/2 doesnt give me an answer choice

jimthompson5910 (jim_thompson5910):

5 + (-9) = ______ (fill in the blank)

OpenStudy (anonymous):

-4 oh it would be (1,-4)?

jimthompson5910 (jim_thompson5910):

you cut -4 in half though

jimthompson5910 (jim_thompson5910):

add the coordinates, cut that result in half

OpenStudy (anonymous):

(1,-2) :)

jimthompson5910 (jim_thompson5910):

yes

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