Sumbu simetri grafik fungsi y = x2 + 8x + 15 adalah….

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A. x = -4
B. X = -3
C.x= -2
D. x = -1​

Sumbu simetri grafik fungsi y = x2 + 8x + 15 adalah….

FUNGSI KUADRAT

y = x² + 8x + 15

a = 1

b = 8

Didapatkan sumbu simetri grafik

x = -b/2a

= -8/2 . 1

= -8/2

= -4

Opsi A