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sumbu simetri = 2
sumbu simetri = -b/2a
-b/2a = 2
A) 4/-1 (salah)
B) 4/-1 (salah)
C) 2/-1(salah)
D) -2/-1 = 2 (bnr)
jawaban D
no 13)
f(x) = -x^2 -6x + 7 digeser 8 satuan ke bawah berarti y' = y - 8
y = y' + 8
y + 8 = -x^2 -6x + 7
y = -x^2 - 6x + 7 - 8
= -x^2 - 6x - 1
memotong sumbu y di (0 , -1)
jawaban C