Question

Dada a função  y = 3x – 9 , com x ∈ lR e y ∈ lR, determine:

f (-1)

f (0)

f (3)


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Answer 1

F ( X ) = 3X - 9

F ( - 1 ) = 3 . ( - 1 ) - 9

F ( - 1 ) = - 3 - 9

F ( - 1 ) = - 12

F ( 0 ) = 3 . 0 - 9

F ( 0 ) = - 9

F ( 3 ) = 3 . 3 - 9

F ( 3 ) = 9 - 9

F ( 3 ) = 0