Sumbu simetri dari grafik fungsi f(x) = x2+4x-12

Sumbu simetri
x = -b/2a = -4/2.1 = -4/2 = -2

Y = x² + 4x – 12

a = 1

b = 4

sumbu simetri = -b/2a

= -4/2(1)

= -2