Question

Fungsi f(x) = 2/3x + b.jika f(b) = b + 2,nilai f(-b) =
a. -5
b. -2
c. 1
d. 3
tolong bantuin meng gunakan cara kerjanya???

Answer 1

F(b) = b + 2
2/3b + b = b + 2
2/3b + b - b = 2
2/3b = 2
b = 2 : 2/3
b = 2 × 3/2
b = 3

f(x) = 2/3x + 3
f(-b) = f(-3) = 2/3 × (-3) + 3
f(-3) = -2 + 3
f(-3) = 1

Jawaban: C