Question

Diketahui f (x) = px + q
f (4) = 10
f (-2) = -6
Tentukan nilai p dan q !
Menggunakan cara

Answer 1

F(4) = 10
f(-2) = -6
.
p {4 - (-2)} = 10 - (-6)
6 p = 16
p = 16/6 = 8/3
q = 10 - 4(p)
q = 10- 32/3
q = -2/3
.
p = 8/3
q = - 2/3

Answer 2

Jika f(x) =px + q
maka f(4)=2×4+2
=> f(4)=10
jadi, p=2 q=2
bukti lbih lanjut
f(-2)=2×-2+2
f(-2)=-6