Diketahui F(3x+1)=6x+3, tentukan nilai 3 F(-2)

Materi : Fungsi Linear

Pembahasan :
f(3x + 1) = 6x + 3
f(3x + 1) = 2(3x + 1) + 1
f(x) = 2x + 1
f(-2) = 2(-2) + 1
f(-2) = -4 + 1
f(-2) = -3
3 f(-2) = 3 . (-3)
3 f(-2) = -9