Represent the rational number -3/7 on a number line.

For Representing Rational Numbers on a Number Line, 

1) We will first check if the given rational number is a negative number or a positive rational number.

2) We conclude that all positive numbers lie on the right and all the negative numbers lie on the left.  

Here given number = . This number is a proper fraction(Numerator< Denominator) and it will lie between 0 and -1.

Steps:

1) To locate this point we will divide the part between zero and -1 in equal parts, equal to the denominator(7) of the fraction and then the mark will be indicated as per the number at the numerator(-3). 

we need to  divide the  portion between 0 and -1 in 7 equal parts and the third mark starting from zero will indicate .