Unit 2 Review - Relations and Functions

Front

What is a function in mathematics?

Back

A function is a relation that assigns exactly one output (y-value) for each input (x-value).

Front

How can you determine if a relation is a function?

Back

A relation is a function if no x-value is paired with more than one y-value.

Front

What is the domain of a function?

Back

The domain of a function is the set of all possible input values (x-values) for the function.

Front

What is the range of a function?

Back

The range of a function is the set of all possible output values (y-values) produced by the function.

Front

What is an irrational number?

Back

An irrational number is a number that cannot be expressed as a fraction of two integers.

Front

Give an example of an irrational number.

Back

An example of an irrational number is 3π or √2.

Front

What is the difference between integers and whole numbers?

Back

Integers include all whole numbers and their negative counterparts, while whole numbers include only non-negative integers (0 and positive integers).

Front

Is -3 an integer?

Back

Yes, -3 is an integer.

Front

What is a real number?

Back

A real number is any number that can be found on the number line, including both rational and irrational numbers.

Front

What is a rational number?

Back

A rational number is any number that can be expressed as a fraction of two integers.