Suatu fungsi h (x) =4x-2 jika f (p) = -6 dan f (3) =q maka nila p-q

Diketahui :
f(x) = 4x – 2
f(p) = -6
f(3) = q

Ditanya :
p – q?

Jawab :
f(x) = 4x – 2
f(p) = 4p – 2
-6 = 4p – 2
4p = -4
p = -1

f(x) = 4x – 2
f(3) = 4(3) – 2
q = 12 – 2
q = 10

= p – q
= -1 – 10
= -11

Pelajaran ini kita pelajari pada saat kelas 8 smp