Final answer:
A fraction's status can be determined based on the numerator and denominator values.
Step-by-step explanation:
A proper fraction is a fraction where the numerator is less than the denominator, while an improper fraction is a fraction where the numerator is equal to or greater than the denominator. A mixed number is a combination of a whole number and a fraction. The fraction 4/5 is a proper fraction because the numerator (4) is less than the denominator (5), but it is not a mixed number because it does not include a whole number component.
Learn more about Understanding proper fractions, improper fractions, and mixed numbers