Point a is at (-2, 4) and point m is at (2.5,3.5).
point m is the midpoint of point a and point b.
what are the coordinates of point b?

The coordinate of point B is (   ,   ) = 7 , 11

Step-by-step explanation:

Given as :

The coordinate of point A = ,   = - 2 , 4

The coordinate of point M = ,   = 2.5 , 3.5

Let The coordinate of point B = ,  

where M is the mid-point of the line joining points A and B

So, from mid-point theorem

=

Or, 2.5 =

Or, 2.5 × 2 = - 2 +

Or, = 5 + 2

∴ = 7

Similarly

=

Or, 2.5 =

Or, 3.5 × 2 = 4 +

Or, = 7 + 4

∴ = 11

So, The coordinate of point B = (   ,   ) = 7 , 11

Hence, The coordinate of point B is (   ,   ) = 7 , 11 Answer

i think the answer is b