1.Diketahui f (×)=5×-2 fog (×)=6×+1 tentukan g (×) 2.Diketahui g (×)=6×+2 fog (×)=7×+2 tentukan f (×)

1)

f(x) = 5x - 2
f(g(x)) = 6x + 1
5g(x) - 2 = 6x + 1
5g(x) = 6x + 3
g(x) = (6/5)x + (3/5)

2)
g(x) = 6x + 2
f(g(x))= 7x + 2
f(6x+2) = 7x + 2
6x + 2 = a
6x = a - 2
x = (a-2)/6

f(a) = 7((a-2)/6) + 2
= (7a-14)/6 + 12/6
= (7a -2)/6

f(x) = (7x - 2) / 6