Question

dada a função f (x) = 3x - 4 calcule a) f (1/3)
b) f (-1)

Answer 1

f (x) = 3x - 4 

a) f (1/3)
f (1/3) = 3*(1/3) - 4 
f (1/3) = 1 - 4 
f (1/3) = -3

b) f (-1)
f (-1) = 3*(-3) - 4 
f (-1) = -9 - 4 
f (-1) = -13