jika f(x)=2x+b,dan f(4) =3,maka f(7)=
Matematika
nazahah1
Pertanyaan
jika f(x)=2x+b,dan f(4) =3,maka f(7)=
2 Jawaban
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1. Jawaban NathanaelEnr
f (x) = 2x + b
f (4) = 2(4) + b
3 = 8 + b
3 - 8 = b
- 5 = b
f(7) = 2(7) - 5
f(7) = 14 - 5
f(7) = 9 -
2. Jawaban janrian
f(x) = 2x + b
f(4) = 3
maka f(7) = ??
Jwb : f(x) = 2x + b
f(4) = 2(4) + b = 3
8 + b = 3
b = 3 - 8
b = - 5
f(7) = 2(7) + (-5)
f(7) = 14 - 5
f(7) = 9