Suatu fungsi f=-2x-1 dengan domain {x|-4<×-1,x€B},tentukan range

domain (A) = {-3, -2, -1, 0}
penye :
u/ x =  -3 ⇒ -2 (-3) - 1 = 5
u/ x = -2 ⇒ -2 (-2) - 1 = 3
u/ x = -1 ⇒ -2 (-1) -1 = 1
u/ x = 0 ⇒ -2 (0) -1 = -1

range = { 5, 3, 1, -1}