Question

Fungsi f(x) didefinisikan oleh f(x) = c - 6x
Jika f(-3) = 23 maka nilai f(3) adalah

A.-23
B.-17
C.-13
D.-12

Answer 1

F(x) = c - 6x
f(-3) = 23
f(-3) -> c - 6(-3) = 23
c + 18 = 23
c = 23 - 18
c = 5
f(3) -> 5 - 6 (3)
= 5 - 18
= -13 (C)