Question

dada a funçao do 1 grau f(x)= -1-5x, calcule:
a) f(0)
b) f(-1)
c)f(2)
d) f(1/5)

Answer 1

substitua o número entre o parenteses por x
f(x)=-5x-1
f(0)=-5•0-1
f(0)=0-1
f(0)=-1

f(-1)=-5•-1-1
f(-1)=5-1
f(-1)=4

f(2)=-5•2-1
f(2)=-10-1
f(2)=-11

f(1/5)=-5•1/5-1
f(1/5)=-1-1
f(1/5)=-2