y - yp = a (x - xp)² (titik puncak (-1,10)
y - 10 = a (x + 1)² melalui titik (1, 2)
-8 = 4a
a = -2
y - 10 = - 2 (x + 1)²
y = -2 (25) + 10
y = - 50 + 10
y = - 40
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y - yp = a (x - xp)² (titik puncak (-1,10)
y - 10 = a (x + 1)² melalui titik (1, 2)
-8 = 4a
a = -2
y - 10 = - 2 (x + 1)²
y = -2 (25) + 10
y = - 50 + 10
y = - 40