# RATL 2 | Lesson 1 | Solutions (Rational Numbers and Rational Expressions)

Answers may vary to 1, 2, and 3

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