gambarlah grafik fungsi f(x) = 3x - 1 dengan x = {-3, -2, -1, 0, 1, 2, 3}

f(-3) = 3(-3) -1 = -10
f(-2) = 3(-2) -1 = -7
f(-1) = 3(-1) -1 = -4
f(0) = 3(0) -1 = -1
f(1) = 3(1) - 1 = 2
f(2) = 3(2)-1 = 5
f(3) = 3(3) -1 = 8

daerah hasil = {-10,-7,-4,-1,2,5,8}