Jawabanmu

2014-06-08T15:17:38+07:00
F(x)=ax+8
-2 = a.2 + 8
-2 = 2a + 8
-10 = 2a
a = -5
2014-06-08T15:18:39+07:00
F(x) = ax+8
f(2) = 2a+8=-2

f(2)=2.a+8=-2
       2a   =-10
          a  =-5