Question

if a line segment has endpoints A(3x+5, 3y) and B(x-1, -y), what are the coordinates of the midpoint of AB?

Answer 1

\[M=(\frac{x_1+x_2+x_3}{2},\frac{y_1+y_2+y_3}{2})\]

Answer 2

i tried that but got stuck

Answer 3

any other help?

Answer 4

So I don't know what sam is talking about but to find the midpoint you should add the x co-ordinates. So do that and tell me what you get.

Answer 5

Sam is talking about the midpoint formula.
http://www.purplemath.com/modules/midpoint.htm

Answer 6

@IvoryKnight Then if that is the midpoint formula you linked to why does sam have (x1+x2+x3)/2?

Answer 7

I think he typed it wrong.

Answer 8

@Jessicabo0404 So Jessica, do you want help or not?

Answer 9

nvm got it thanks

Answer 10

ok got another one but i need to draw it

Answer 11

what could be the length of DB?
a5
b12
c19
d25
helppp!