Question

Fungsi f(x) = px+q jika f(2) = 3 dan f(-4)= 9 maka f (8) adalah
tolong bantu saya

Answer 1

F(-4)⇒ -4p + q = 9
f(2)⇒    2p + q =3
------------------------- -
-6p = 6
p=-6/6
p = -1

2p + q = 3
2(-1) + q = 3
-2 + q = 3
q = 5

f(8)⇒ -1(8) + 5 = -3