F(x) = ax + b
Jika f(0) = 2
f(0) = 7
Berapa nilai f3?
Jawaban Terkonfirmasi
Bab Fungsi
Matematika SMP Kelas VIII
f(x) = ax + b
f(0) = 0x + b = 2
b = 2
f(-1) = -a + b = 7
-a + 2 = 7
-a = 7 – 2
-a = 5
a = -5
f(x) = -5x + 2
f(3) = -5 . 3 + 2
= -15 + 2
= -13