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Kelas 8 MatematikaBab Fungsi
a] f(x) = 4x + 3
f(-2) = 4 . (-2) + 3
f(-2) = -8 + 3
f(-2) = -5
b] f(x) = 3
4x + 3 = 3
4x = 3 - 3
x = 0/4
x = 0