koordinat titik balik grafik fungsi y=x kuadrat- 2y- 3 adala

jawab

y = x² - 2x - 3
a= 1
b = - 2
c = - 3

koordinat titik balik (x,y)

x = -b/2a = -(-2)/(2(1))
x = 1

y = 1² - 2(1) - 3
y = - 4

titik balik (x,y) = (1,-4)