Answers may vary to 1, 2, and 3
4) Rational numbers are the ratio of one integer to another integers. For example \(\frac{-1}{4}\)
5) Both rational numbers and expressions can be represented as a fraction. Rational expressions include variables and can include multiple terms. For example \(\frac{x+2}{xy}\).
6) The response contains both the answers for 4 and 5.