ALGEBRA 1 - PRETEST 2

[1] Identify the subsets of real numbers to which the number 6 belongs (select the one that best matches)

• Irrational Numbers, Real Numbers

• Whole Numbers, Real Numbers

• Natural Numbers, Whole Numbers, Real Numbers

• Natural Numbers, Real Numbers, Rational Numbers

• Natural Numbers, Whole Numbers, Integers, Rational Numbers, Real Numbers

• constants: 5 and 2

  variables: x

• constants: x

  variables: 5 and 2

• constants: 5

  variables: x

• constants: 2

  variables: 5x

• constants: 5x + 2

  variables: x

Mathematical Equivalence

ON

Mathematical Equivalence

ON

Mathematical Equivalence

ON

Mathematical Equivalence

OFF

Mathematical Equivalence

ON

[1] Terry says that the set of natural numbers is closed under subtraction. Determine whether this statement is true or false. Give a counterexample if the statement is false.

• False. 2 - 4. The difference is not a natural number.

• True
• Partially true
• Not enough information to determine