Pada pemetaan f(x)= 5-3x jika domain f={(-2,-1,0,1,2,3)} maka range f adalah.. A.{-1,2,5,8,11,14} B.{-4,1,2,5,8,11} C.{-2,-1,2,5,8,11} D.{-2,-1,2,5,8,11,14} Moh

Bab Pemetaan
Matematika SMP Kelas VIII

f(x) = 5 - 3x

f(-2) = 5 - 3 . (-2)
       = 5 + 6
       = 11

f(-1) = 5 - 3 . (-1)
        = 5 + 3
        = 8

f(0) = 5 - 3 . 0
      = 5 - 0
      = 5

f(1) = 5 - 3 . 1
       = 5 - 3
       = 2

f(2) = 5 - 3 . 2
      = 5 - 6  
      = -1

f(3) = 5 - 3 . 3
       = 5 - 9
       = -4

Range = { -4, -1, 2, 5, 8, 11 }