Question

Dada a função f por f(x) = y = 3x-9,determine:

a) f(-1)
b) f(0)
c) f(3)

Answer 1

f(x)=y=3x-9

a) f(-1)=3.(-1)-9
f(-1)=-3-9
f(-1)=-12
b) f(0)=3.0-9
f(0)=0-9
f(0)=-9
c) f(3)=3.3-9
f(3)=9-9
f(3)=0