Daerah asal fungsi f(x)= 3x+8adalah x €{-3,-2,-1,0,1,2,3}daerah hasil fungsi adalah

Bab Fungsi
Matematika SMP Kelas VIII

f(x) = 3x + 8
f(-3) = 3 . -3 + 8 = -1
f(-2) = 3 . -2 + 8 = 2
beda 3
f(3) = 3 . 3 + 8 = 17

daerah hasil = { -1, 2, 5, 8, 11, 14, 17 }

f(x) = 3x+8
{-3,-2,-1,0,1,2,3}

3(-3)+8=-9+8=1
3(-2)+8=-6+8=2
3(-1)+8=-3+8=5
3(0)+8=8
3(1)+8=11
3(2)+8=14
3(3)+8=17

Hp={1,2,5,8,11,14,17}