Tolong di jawab yah!!

Kelas 10 Matematika
Bab Fungsi Kuadrat

Puncak (2, 1)
Melalui (0, 5)

y - yp = a . (x - xp)²
5 - 1 = a . (0 - 2)²
4 = a . 4
a = 1

y = a . (x - xp)² + yp
y = 1 . (x - 2)² + 1
y = x² - 4x + 5