Fungsi f(x) = ax + b, jika f(2) = -2 dan f(-3) = 13 maka nilai f(4) adalah..?
Matematika
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Pertanyaan
Fungsi f(x) = ax + b, jika f(2) = -2 dan f(-3) = 13 maka nilai f(4) adalah..?
2 Jawaban
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1. Jawaban Anonyme
Kelas 8 Matematika
Bab Fungsi
f(x) = ax + b
f(2) = 2a + b = -2
f(-3) = -3a + b = 13
-3a + b = 13
2a + b = -2
------------------ -
-5a = 15
a = -3
2a + b = -2
2 . (-3) + b = -2
b = -2 + 6
b = 4
f(x) = -3x + 4
f(4) = -3 . 4 + 4
f(-4) = -12 + 4
f(-4) = -8 -
2. Jawaban nadhifahs21
f(x)=ax+b
f(2)=a(2)+b=-2
f(3)=a(3)+b=13
