Question

Bantu jawab. senin sudah harus dikumpulkan:')

Answer 1

(-1,6) --> a - b + c = 6
(3,2) --> 9a + 3b + c = 2
--------------------------------- -.
-8a -4b = 4
2a + b = -1
b = -1 - 2a
(5,12) --> 25a + 5b + c = 12
(3,2) --> 9a + 3b + c = 2
------------------------------------ -
16a + 2b = 10
8a + b = 5
8a + (-1-2a) = 5
8a -1 -2a = 5
6a - 1 = 5
6a = 6
a = 1
b = -1 -2(1) = -1-2 = -3
a - b + c = 6
1 + 3 + c = 6
c + 4 = 6
c = 2

fungsi kuadrat
y = ax² + bx + c
y = x² -3x + 2