fungsi f didefinisikan dengan rumus f(x) = 5 - 3x dengan daerah asal {-2,-1,0,1,2,3} .tentukan lah daerah hasinya

Jawab :

Domain : {-2,-1,0,1,2,3}
Range : ...?

1) f(x) = 5 - 3x
f(-2) = 5 - 3(-2)
= 5 - (-6)
= 11

2) f(x) = 5 - 3x
f(-1) = 5 - 3(-1)
= 5 - (-3)
= 8

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

4) f(x) = 5 - 3x
f(1) = 5 - 3(1)
= 5 - 3
= 2

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

6) f(x) = 5 - 3x
f(3) = 5 - 3(3)
= 5 - 9
= -4
Jadi Rangenya : 11 , 8 , 5 , 2 , -1 , -4