Diketahui f(x)=ax+b. Tentukan bentuk fungsi fungsi berikut jika
a) f(2)=4. f(5)=10
tolng jwb yg benr yaa
a) f(2)=4. f(5)=10
tolng jwb yg benr yaa
Jawaban:
f(x) = 2x
Penjelasan dengan langkah-langkah:
[tex]f(2) = 2a + b = 4 \\ f(5) = 5a + b = 1 0 \\ - - - - - - - - - \: \: - \\ - 3a = - 6 \\ a = - 6 \div - 3 = 2 \\ [/tex]
f(2) = 4
2*2+b=4
4+b = 4
b = 4-4 = 0
a = 2 b = 0
rumus :
f(x) = 2x
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