Question

dada a função f (x) = -2x+3 , o domínio (-4,-3,-2,-1,0,1,2,3,4,5,6) determine o conjunto imagem de f​

Answer 1

$\Large\boxed{\begin{array}{l}\sf f(x)=-2x+3\\\sf f(-4)=-2\cdot(-4)+3=8+3=11\\\sf f(-3)=-2\cdot(-3)+3=6+3=9\\\sf f(-2)=-2\cdot(-2)+3=4+3=7\\\sf f (0)=-2\cdot0+3=3\\\sf f(1)=-2\cdot1+3=-2+3=1\\\sf f( 2)=-2\cdot2+3=-4+3=-1\\\sf f (3)=-2\cdot3+3=-6+3=-3\\\sf f(4)=-2\cdot(4)+3=-8+3=-5\\\sf f(5)=-2\cdot5+3=-10+3=-7\\\sf f(6)=-2\cdot6+3=-12+3=-9\end{array}}$

$\Large\boxed{\begin{array}{l}\sf Imf(x)=\{11,9,7,5,3,1,-1,-3,-5,-7,-9\}\end{array}}$