Question

Dada a função do 1 grau f(x)=1-5x determine: A)f(0) B)f(-1) C)f (1/5) D)f(-1/5) E)f(8) F)f(10) G)f(12)

Answer 1

f (0)=1-5×0
f (0)=1-0
f (0)=1

f (-1)=1-5×(-1)
f(-1)=1+5
f (-1)=6

f (8)=1-5×8
f (8)=1-40
f (8)=-39

f (10)=1-5×10
f (10)=1-50
f (10)=-49

f (12)=1-5×12
f (12)=1-60
f (12)=-59