Diketahui f(x) = px + q, f(-2) = 8 dan f(1) = 1 nilai f(4) adalah
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Pertanyaan
Diketahui f(x) = px + q, f(-2) = 8 dan f(1) = 1 nilai f(4) adalah
1 Jawaban
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1. Jawaban Anonyme
Bab Fungsi
Matematika SMP Kelas VIII
f(x) = px + q
f(1) = p + q = 1
f(-2) = -2p + q = 8
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3p = -7
p = -7/3
p + q = 1
q = 1 + 7/3
q = 10/3
f(x) = -7/3 x + 10/3
f(4) = -7 . 4 / 3 + 10 / 3
f(4) = -28/3 + 10/3
f(4) = -18/3 = -6