Odpowiedzi

  • Użytkownik Zadane
2013-07-17T10:43:24+02:00

A = (-4, 7)   i B = (x, y)      S = (2, -3)

 

(-4 + x) / 2 = 2        i         (7 + y) / 2 = -3

-4 + x = 4                         7 + y = -6

x = 8                                     y = -13

 

B = (8, -13)

 

odp. D

2013-07-17T10:49:49+02:00

 

B(x,y)

(x-4)/2=2

x-4=4

x=4+4

x=8

(y+7)/2=-3

y+7=-6

y=-6-7=-13

B(8,-13)

Odp. D