It's rational. It's the ratio of -1 to 9 .
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No. An irrational number is any number that is not a rational number; A rational number is any number that can be expressed as one integer over another integer. negative 3 over 4 is one integer (negative 3) over another integer (4), and so is a rational number.
It is rational
100/3 is a rational number
Rational (-1.5) Since it can be expressed as a fraction.
2/9 is rational by definition- it is a ratio of two integers.