Question

Dada a função f(x) = -2x+9, encontre

a. f(-3)
b. f(6)
c. f(-7)
d. f(1/2)
e. (-3/7)

Answer 1

f(x)=-2×+9
f(-3)=-2.(-3)+9
f(-3)=6+9
f(-3)=15

b) f(×)=-2×+9
f(6)=-2.6+9
f(6)=12+9
f(6)=21

c) f(-7)=-2.(-7)+9
f(-7)=14+9
f(-7)=23

d)f(1/2)=-2.(0,5)+9
f(1/2)=-1+9
f(1/2)=8