Jawab:
Diketahui :
Titik A' (15,-6) ⇒ x' = 15, y' = -6
Titik pusat O(0,0)
Faktor skala 1/3 = k
Ditanya : Koordinat Titik A ?
Dijawab :
# x' = k . x
⇔ 15 = 1/3 . x
⇔ 15÷1/3 = x
⇔ 45 = x
# y' = k . y
⇔ -6 = 1/3 . y
⇔ -6 ÷ 1/3 = y
⇔ -18 = y
Jadi, Koordinat titik A adalah (45,-18)
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Jawab:
Diketahui :
Titik A' (15,-6) ⇒ x' = 15, y' = -6
Titik pusat O(0,0)
Faktor skala 1/3 = k
Ditanya : Koordinat Titik A ?
Dijawab :
# x' = k . x
⇔ 15 = 1/3 . x
⇔ 15÷1/3 = x
⇔ 45 = x
# y' = k . y
⇔ -6 = 1/3 . y
⇔ -6 ÷ 1/3 = y
⇔ -18 = y
Jadi, Koordinat titik A adalah (45,-18)