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f(2) = a(2) + b = 2
2a + b = 2
f(3) = a(3) + b = 5
3a + b = 5
2a + b = 2
3a + b = 5
------------- -
-a = -3
a = -3/-1
a = 3
2a + b = 2 ---> 2(3) + b = 2
6 + b = 2
b = 2 - 6
b = -4
a) Nilai a = 3
b = -4
b) Rumus fungsi f(x) = 3x - 4
c) f(9) = 3(9) - 4
= 27 - 4
= 23
Diket=f(x)=ax+b
f(2)=2
f(3)=5
Ditan=a.Tentukan rumus f(9)
b.Hitung A dan B
Dijaw=a. f(x)=ax+b
f(2)=2
f(3)=5
-3:-1
f(x)=3x-4
f(9)=23
Jadi, rumusnya, f(x)=3x-4 dan f(9)=23
b.f(x)=ax+b
f(2)=2a+b=2
f(3)=3a+b=5
___________-
= -a=-3
a=3
2.3+b=2
6+b=2
b=2-6
b= -4
Jadi, a=3 dan b= -4
maaf kalo lama jawabnya,, tapi mohon kasi terima kasih dan beri jawaban terbaik^_^