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maka persamaannya
y = a(x-xp)^2 + yp
y = a(x - 2)^2 - 7
Melalui (5,2)
2 = a(5-2)^2 - 7
2 = a9 - 7
9a = 9
a = 1
Maka persamaanya
y = 1(x-2)^2 - 7
Untuk melalui (-2,p)
p = (-2-2)^2 - 7
p = 16 - 7
p = 9