segitiga RST dengan R(-10,-8), S(2,-4), T(-6,4) didilatasikan dengan faktor skala 1/2 pusat (-4,2). koordinat bayangan segitiga RST adalah ??

r'=(a+(k(x-a),(b+(k(y-b)
  =(-4 + (1/2 (-10-(-4)),(2+(1/2(-8-2))
  =(-4 + (1/2(-6)),(2+1/2 (-10))
  =(-4-3,2-5)
  =(-7,-3)

s'=(a+(k(x-a),(b+(k(y-b)
  =(-4+(1/2 (2-(-4)),(2+(1/2(-4-2))
=(-4+3),(2+(-3))
=(-1,-1)

t'=(a+(k(x-a),(b+(k(y-b)
=(-4 +(1/2(-6-(-4)),(2+1/2(4-2))
=(-4+(-1)),(2+1)
=(-5,3)