Every rational number is a fraction. 

If $\frac{a}{b}$ is a rational number and $m$ is any integer, then $\frac{a}{b}=\frac{a\times m}{b\times m}$.

Draw the number line and represent the following rational number on it:

$\frac{2}{3}$

Draw the number line and represent the following rational number on it:

$\frac{3}{4}$

Draw the number line and represent the following rational number on it

$\frac{3}{8}$