dik : fungsi f(x) = ax - 3. jika f(1) = 1 maka nilai f(10) adalah

f(x) = ax - 3
f(1) = 1

Maka cari nilai a dahulu.

f(1) = a(1) - 3
1 = a - 3
a - 3 = 1
a = 4

Substitusikan nilai a = 4 ke fungsi.

f(x) = ax - 3
f(x) = 4x - 3

Cari nilai f(10):

f(x) = 4x - 3
f(10) = 4(10) -3
f(10) = 40 - 3
f(10) = 37