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Wektory BC i AD sa rowne.
BC=[1-3, 5+4]=[-2,9]
D=(x,y)
AD=[x+5, y-2]
x+5=-2
x=-7
y-2=9
y=11
Odp. D=(-7,11)
2.
5+3=8
Zaleznosc miedzy wektorami:
AP=5/8 * AB lub 3/8*AB=PB
P=(x,y)
AB=[-5-3,1+7]=[-8,8]
AP=5/8*[-8,8]=[-5,5]
x-3=-5
x=-2
y+7=5
y=-2
Odp. P=(-2, -2).