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Kelas 8 Matematika
Bab Fungsi

(0, 2) dan (3, 4)

f(x) = ax + b

f(0) = 0 + b = 2
b = 2

f(3) = 3a + b = 4
3a + 2 = 4
3a = 4 - 2
a = 2/3

f(x) = 2x/3 + 2