1.3 exploring real numbers

Question 1

rational number

Answer 1

is any number that you can write in the form a-b where a and b are integers.

Question 2

irrational number

Answer 2

cannot be expressed in the form a-b where a and b are integers.

Question 3

real numbers

Answer 3

together, rational numbers and irrational numbers form the set of real numbers

Question 4

inequality

Answer 4

is a mathematical sentence that compares the value of two expressions using an inequality symbol such as >or<.

Question 5

counter example

Answer 5

any example that proves a statement false.

Question 6

opposites

Answer 6

two numbers that are the same distance from zero on a number line but lie in opposite directions.