pliss dijawab soal no 10, besok harus dikumpulin!

f(x) = ax + b

f(-3) = -15
-3a + b = -15

f(-2) = -12
-2a + b = -12

-3a + b = -15
-2a + b = -12
---------------------- -
-a = -3
a = 3

-2a + b = -12
-2(3) + b = -12
-6 + b = -12
b = -12 + 6
b = -6

maka
f(x) = 3x - 6

jawaban B