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Titik (a,b) translasi (2,3) menghasilkan (4,7)
x' = a + 2 → 4 = a + 2 → a = 2
y' = b + 3 → 7 = b + 3 → b = 4
a + b = 2 + 4 = 6
Jawaban C

Titik (2a+b, b-a) Translasi (a,b) menghasilkan (4, 1)
x' = 2a + b + a
4 = 3a + b ●
y' = b - a + b
1 = -a + 2b ●●
Elimnasi ● dan ●●
3a + b = 4
-3a + 6b = 3 sudah dikali 3
____________+
7b = 7
b = 1
3a = 4 - b = 4 - 1 = 3
a = 1

Jadi, a + 2b = 1 + 2(1) = 1 + 2 = 3
Jawaban A

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