Question

Bayangan titik P(5, 6) jika di dilatasikan oleh [P(2, 3), 3] adalah...
a. P' (14, 15)
b. P' (15, 14)
c. P' (14, -15)
d. P' (15, -14)
e. P' (-15, -14)

Answer 1

Matriks dilatasi:
[x'] = [k(x₁-x₂) + x₁]
[y'] = [k(y₁-y₂) + y₁]
Sehingga,
[x'] = [3(5-2) + 5] = [14]
[y'] = [3(6-3) + 6] = [15]
Titik P'(14,15) [A]