Jawabanmu

2014-02-02T14:55:56+07:00
Diketahui =
Fungsi f(x) = mx + n
f(1) = 5 , f(-3) = -23

Jadi,
⇒ f(1) = m + n = 5
⇒ f(-3) = -3m + n = -23
Kemudian pakai eliminasi,
-3m + n = -23
m + n = 5
-4m = -28
m = 7
Untuk mencari n =
7 + n = 5
n = -2

Maka, nilai f(5) =
f(5) = 7x - 2
= 7(5) - 2
= 33