Question

dada a funcão f(x)=1-2x sobre 3,determine f(-1) a f(2)

Answer 1

f(x)= 1-2x/3
f(-1)=1-2(-1)/3
f(-1)= 1-2/3
f(-1)=-1/3 = -0,333...

f(2)=1-2(2)/3
f(2)=1-4/3
f(2)=-3/3= -1