Question

construa o gráfico de f (x) = 9x-27

Answer 1

a) f(-2)=9.(-2)-27 
=-18-27 
=- 45 

b) y=f(x) 

y=9.(1/2)-27 
y=9/2-27 
y=4,5-27 
y=22,5 

c) 9x-27=0 
9x=27 
x=27/9 
x=3 


d) ------+------5----------_----