contestada

AB has one endpoint located at A (4.5, -3) and the midpoint is located at M (1,2). What is the location of the other endpoint B?
10:
6
2
-10-8
-2)
.6
O A (-7,2.5)
B. (9, - 8)
O
C. (-2.5,7)
O D. (8-9)

Respuesta :

Answer:

X = -2.5  y = 7

Step-by-step explanation:

Midpoint formula   x1 + x2/2    y1+y2/2

A = (4.5, -3)    M = (1,2)    B = our unknown so we will call it (x,y)

4.5 + x /2 = 1               -3 + y / 2 = 2

2{ 4.5 + x/2] = 1 * 2      2[ -3 + y/2] = 2 * 2

4.5 + x = 2                     -3 + y = 4

x + 4.5 - 4.5 + 2 - 4.5           y - 3 + 3 = 4 + 3

x = -2.5                                y = 7