Question

when does a rational number a/b become positive or negative ​

Answer 1

Answer:

AN RATIONAL NUMBER A/B IS POSITIVE WHEN NUMERATOR AND DENOMINATOR HAVE SAME SIGN

Step-by-step explanation:

AN RATIONAL NUMBER A/B IS NEGETIVE WHEN NUMERATOR AND DENOMINATOR DIFFERENT SIGN

Answer 2

Answer:

Step-by-step explanation:

If both a and b are positive integers or both are negative integers then the rational number a/b becomes positive.

For example:

a)Let a = -2 and b = -5

  a/b = -2/-5

        = 2/5, which is a positive rational number

b) Let a = -7 and b = 9

    a/b = -7/9, which is a negative integer

NOTE:

A positive rational number is said to be positive if it has a unique point on the RIGHT side of the number line (to the right of 0)whereas a negative rational number is said to be negative if it has a unique point on the LEFT side of the number line(to the left of 0)