jika fungsi kuadrat x=y²-y-6 carilah koordinat titik puncak dan parabolanya

jawab

x = y² - y - 6
x' = 0
2y -1 = 0
y  = 1/2
x = (1/2)² -(1/2) - 6
x = 1/4 - 1/2 - 6 = - 6 1/4
titik puncak  = (- 6 1/4 , 1/2)