Question

M is the midpoint of AB . The coordinates of A are (-2,3) and the coordinates of M are (1,0).
Find the coordinates of B.

Answer 1

use midpoint formula

Answer 2

I got (-1/2,3/2)

Answer 3

@ivettef365

Answer 4

x1+x2
------
2

Answer 5

-2+1 -1
----- = ----
2 2

Answer 6

y1+y2 3+0
------ = ==== = 3/2
2 2

Answer 7

[1] (-1/2, 3/2) [2] (4,-3) [3] (-4,3) [4] (-5,6)

Those are the choices

Answer 8

I picked one but its wrong

Answer 9

oh, because points M (1,0) are the midpoints

Answer 10

So how would I do iy?

Answer 11

It*

Answer 12

use same formula
x1+x2 -2 +x
------ = ------- = 1
x 2

Answer 13

Why is the answer (4,-3)

Answer 14

so that is equal to -2+x = 2, so x = 2+2

Answer 15

now solve for y
3 +y
==== = 0
2

Answer 16

so you have 3+y=0, y=-3

Answer 17

So where did the 4 come from?

Answer 18

you have -2+x
----- = 1
2

Answer 19

I have no idea how you did any of this

Answer 20

first thing you do is multiply by 2 so you have

(2) -2+x
--- .----- = 1 . 2
1 2

Answer 21

then you have -2+x=2
+2 +2
-------------
x=4

Answer 22

I used the midpoint formula, which is

x1 + x2
--------
2