Question

Guys kinda dumb in math... Practicing but need help!

The endpoints of a line segment are at the coordinates (6, 3, 4) and (4, 1, 2). What is the midpoint of the segment?

A) (10, 2, 2)
B) (5, 1, 1)
C) (2, 2, 6)
D) (1, 1, 3)

Answer 1

You guys will be so awesome if you can help!

Answer 2

to find the midpoint, you just add up the corresponding coordinates

then you cut each sum in half

Answer 3

so for example, the x coordinates are: 6 and 4

add them: 6+4 = 10

cut that sum in half: 10/2 = 5

So the x coordinate of the midpoint is x = 5

Answer 4

repeat this for the other coordinates

Answer 5

Wait so which one would that be? Little confused

Answer 6

(6, 3, 4) and (4, 1, 2) are two points

the x coordinates of each point (in the same order) are: 6 and 4

agreed?

Answer 7

Yes!

Answer 8

ok just add them up, and divide by 2

Answer 9

(x1+x2)/2

(6+4)/2

10/2

5

Answer 10

so the midpoint will be some point where the x coordinate (of the midpoint) is x = 5

Answer 11

so add 6, 3, 4) and 4 ,1 2 and then dvide it by 2?

Answer 12

so it will look like

(5, ??, ??)

where you will replace the ?? with actual numbers (once you find them)

Answer 13

you could think of it like that

Answer 14

(x, y, z)

Answer 15

but it's not quite the same as addition, but it's close enough

Answer 16

So -5, -1, 1

Answer 17

how did you get -5?

Answer 18

Well you said 5 first then the rest and its in the choices!

Answer 19

the y coordinates of the two points are 3 and 1

add them, then divide by 2

(y1+y2)/2

(3+1)/2

4/2

2

So the y coordinate of the midpoint is y = 2

Answer 20

So far, we found

x = 5
y = 2

Answer 21

Ok.. Um i am in 6th grade and trying to learn quick but can you just tell me this answer.

Answer 22

two problems:

1) I cannot just give out the answer

2) the correct answer isn't even one of the choices (even if I wanted to give you the answer)

Answer 23

btw this is pretty advanced stuff for a sixth grader, I'm impressed

Answer 24

but out of the choices and i meant to put for the second one (5, -1, 1)

Answer 25

can you post a screenshot

Answer 26

Yeah i am in SEM

Answer 27

ok can you post the actual problem please

Answer 28

the screenshot of the actual problem

Answer 29

yeah hold on!

Answer 30

ok

Answer 31

ok thought so, there are negatives in here that didn't show up earlier

Answer 32

Oh sorry!

Answer 33

the x coordinates of the two points are -6 and 4

add them and divide by 2

(x1+x2)/2

(-6+4)/2

-2/2

-1

Answer 34

that's fine, that's what screenshots are for

the x coordinate of the midpoint is -1

Answer 35

so its either -1, 1, 3 or -5, -1, 1

Answer 36

Would it be the second one then!

Answer 37

can't be (-5, -1, 1) since the x coordinate is NOT -1

Answer 38

so it's gotta be (-1, 1, 3)

Answer 39

you could go through the rest of the coordinates, but they should all work

Answer 40

Oh got it!

Answer 41

ok that's great