Jawabanmu

2014-02-14T19:04:22+07:00
nilai x = 2
nilai f(x) = 4
f(x) = ax - 6
4 = a(2) - 6
4 = 2a - 6
10 = 2a
a = 5

CMIIW ^_^
2014-02-14T19:06:08+07:00
Diketahui: f(x) = ax - 6
               f(2) = 4
Ditanya: a
Jawab:
f(2) = 4
a.2 - 6 = 4
2a = 4 + 6
2a = 10
a =  \frac{10}{2}
   = 5