Diketahui f(x) =ax+b f(3)=1 dan f(-5)=17 tentukan f(5) f(-3)

F(x) = ax + b

f(3) = a(3) + b = 1
f(-5) = a(-5) + b = 17
_______________ –
a(8) = -16
a = -2
b = 7

Tentukan f(5) dan f(-3)
f(5) = -2(5) + 7 = -10 + 7 = -3
f(-3) = -2(-3) + 7 = 6 + 7 = 13