Yes, negative fractions are indeed considered rational numbers. A rational number is defined as any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero. This includes positive fractions, negative fractions, whole numbers, and even negative whole numbers.
For example, the fraction -3/4 is a negative fraction. Here, -3 is the numerator (an integer) and 4 is the denominator (also an integer), and since the denominator is not zero, -3/4 qualifies as a rational number. Similarly, any fraction that has a negative numerator or a negative denominator will also fall under the category of rational numbers.
To summarize, the key point is that as long as a fraction can be written with both the numerator and the denominator being integers and the denominator not being zero, it is a rational number, regardless of whether it is negative or positive.