Odpowiedź :
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
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
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
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