$\left\{7,9\right\}$

$\left\{5,7,9\right\}$

$\left\{3,5,7,9\right\}$

$\left\{1,3,5,7,9\right\}$

$-1-\frac{3}{2}i$

$-1+\frac{3}{2}i$

$-\frac{3}{2}+i$

$-\frac{3}{2}-i$

$f\left(x\right)=-x$

$f\left(x\right)={\left(\frac{2}{3}\right)}^x$

$f\left(x\right)=x^2$

$f\left(x\right)=\sqrt[3]{x}$

$\frac{9}{5}$

$\frac{8}{5}$

$\frac{6}{5}$

$\frac{4}{5}$

1.5

1.2

0.8

0.6