Question

dada a função f (x)=-3x-1, o domínio (-3,-2,-1,0,1,2,3) determine o conjunto imagem de f​

Answer 1

$\Large\boxed{\begin{array}{l}\sf f(x)=-3x-1\\\sf f(-3)=-3\cdot(-3)-1=9-1=8\\\sf f(-2)=-3\cdot(-2)-1=6-1=5\\\sf f(-1)=-3\cdot(-1)-1=3-1=2\\\sf f(0)=-3\cdot0-1=0-1=-1\\\sf f(1)=-3\cdot (1)-1=-3-1=-4\\\sf f(2)=-3\cdot(2)-1=-6-1=-7\\\sf f(3)=-3\cdot(3)-1=-9-1=-10\\\sf Imf(x)=\{-10,-7,-4,-1,2,5,8\}\end{array}}$