Fungsi f dinyatakan dengan rumus f(x)=ax+b.
Jika f(2)=13&f(5)=22.
Tentukan= a.nilai a&b.
B.bentuk fungsi.
C.bayangan dari -8
Jika f(2)=13&f(5)=22.
Tentukan= a.nilai a&b.
B.bentuk fungsi.
C.bayangan dari -8
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5a + b = 22
--------------- -
-3a = -9
a = 3
b => 2x3 + b = 13 => 6 + b = 13 => b = 7
f(x) = 3x + 7
f(-8) = 3x-8 + 7 = -24 + 7 = - 17