diketahui f(x)ax+b jika f(-2)=-4 f(3)=16 tentukan nilai a dan b,tentukan f(-10)
Matematika
jovitaraharjani02
Pertanyaan
diketahui f(x)ax+b jika f(-2)=-4 f(3)=16 tentukan nilai a dan b,tentukan f(-10)
1 Jawaban
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1. Jawaban mariani02021975
f(x) = ax + b
f(-2) = -4
f(-2) = a(-2) + b = -4
= -2a + b = -4
f(3) = 16
f(3) = a(3) + b = 16
= 3a + b = 16
-2a + b = -4
3a + b = 16
__________ _
-5a = -20
a = -20 / -5
a = 4
-2a + b = -4
-2(4) + b = -4
-8 + b = -4
b = -4 + 8
b = 4
f(-10) = ax + b
= 4(-10) + 4
= -40 + 4
= 36
semoga membantu :)