Fungsi F ditentukan oleh f(x)=ax+b, jika F(-3)=-5 dan f(-3)=9. Berapa nilai A&B dan rumus fungsi

f(x) = ax + b

f(3) = 3a + b = -5
f(-3) = -3a + b = 9

3a + b = -5
-3a + b = 9
_________ +
2b = -4
b = -2

3a - 2 = - 5
3a = -5 +2
a = 3/3
a = 1

a = 1 & b = -2