Question

If AB has endpoint A(2,13) and midpoint (10,-1) then give the coordinates of B.

Answer 1

B(18, -15)

Answer 2

Can you tell me how i solve it though?

Answer 3

Midpoint should have a coordinate value of mean of the two points

Answer 4

10=(2+x)/2
20=2+x
x=18
-1=(y+13)/2
-2=y+13
y=-15

Answer 5

would that work?

Answer 6

all jygerbs did is add the X1 and X2 and put it over 2 to find the midpoint. Since you don't know X2 you simply put X and solve for it. You then proceed to do the same for Y

Answer 7

By put it over your mean multiply?

Answer 8

\[M(\frac{ x _{1}+x _{2} }{ 2 }, \frac{ y _{1}+y _{2} }{2 })\]

Answer 9

I just substituted x1,x2,y1,y2 with the coordinates to solve the equation

Answer 10

Ohhhhh the midpoint formula. So you just plug it in. Okay thank you.

Answer 11

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