Determine the domain range and if a relation is a function

The video tutorial explains the concepts of domain and range, emphasizing that the domain consists of input values (X values) and the range consists of output values (Y values). It guides viewers on how to identify domain and range from a set of coordinates. The tutorial also covers how to determine if a relation is a function by ensuring each domain element maps to a unique range element.

What is the domain in a set of ordered pairs?

• The set of all values

• The set of Z values

• The set of X values

• The set of Y values

Which of the following best describes the range?

• The set of negative values

• The set of all possible values

• The set of output values

• The set of input values

If you have the points (3, -9), (11, 21), (121, 34), and (23, 45), what is the domain?

• {121, 34, 23, 45}

• {3, 11, 121, 23}

• {-9, 21, 34, 45}

• {3, -9, 11, 21}

How can you determine if a relation is a function?

• Each element in the domain maps to multiple elements in the range

• Each element in the range maps to exactly one element in the domain

• Each element in the domain maps to exactly one element in the range

• Each element in the range maps to multiple elements in the domain

In the relation given, does the element 11 map to more than one element in the range?

• It does not map to any element

• It maps to itself

• No, it maps to only one element

• Yes, it maps to multiple elements