f(x)=ax+b jika f(2)=3 dan f(-3)=13 maka nilai -a+b adalah

- Fungsi -

f(x) = ax+b

f(2) = 2a + b
3 = 2a + b
b = 3 - 2a

f(-3) = -3a + b
13 = -3a+ (3 - 2a)
13 = -5a + 3
-5a = 10
a = -2

b = 3 - 2(-2)
b = 3 + 4 = 7

maka, -a+b = -(-2)+7 = 2+7 = 9

semoga membantu
-vin

good luck.. smg terbaca.