Reviewing Relations, Functions, Domain, and Range

Miss Will Hoy provides a review of relations, functions, domain, and range. She explains how to identify the domain and range from a set of ordered pairs and discusses the concept of relations. The video also covers how to determine if a relation is a function by checking for duplicate X values. Additionally, graph analysis is used to illustrate how to identify domain, range, and function status, emphasizing that each X should have exactly one Y value.

What are the four main topics covered in this review session?

• Relations, Functions, Domain, and Range

• Equations, Inequalities, Graphs, and Functions

• Polynomials, Exponents, Relations, and Domain

• Functions, Graphs, Inequalities, and Range

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

How do you determine the domain from a set of ordered pairs?

• List all the Y values without duplicating

• List all the X values without duplicating

• List all the X and Y values without duplicating

• List all the Y values and then the X values

What is the domain of the set of ordered pairs: (2, -3), (4, 6), (3, -1), (6, 6), (2, 3)?

• 2, 4, 3, 6

• 2, 4, 3, 6, 2

• 2, -3, 4, 6, 3, -1, 6, 2, 3

• -3, 6, -1, 6, 3

If every X value on a graph has a corresponding Y value, what can be said about the domain?

• The domain is all integers

• The domain is all real numbers

• The domain is all negative numbers

• The domain is all positive numbers

Tags

CCSS.HSF.IF.A.1

CCSS.8.F.A.1

What is a relation in terms of ordered pairs?

• A set of ordered pairs showing a relationship between X and Y values

• A set of ordered pairs where Y values are unique

• A set of ordered pairs with no duplicate values

• A set of ordered pairs where X values are unique

Tags

CCSS.8.F.A.1

Why is the set of ordered pairs (2, -3), (4, 6), (3, -1), (6, 6), (2, 3) not a function?

• Because there are duplicate X values

• Because the Y values are not in order

• Because there are duplicate Y values

• Because the X values are not in order

Tags

CCSS.8.F.A.1

What test can be used to determine if a graph represents a function?

• Coordinate Test

• Horizontal Line Test

• Slope Test

• Vertical Line Test

What does it mean if a vertical line touches a graph at more than one point?

• The graph represents a function

• The graph does not represent a function

• The graph represents a relation

• The graph represents all real numbers

In the given graph, what is the domain if all X values are positive?

• X is not equal to zero

• X is equal to zero

• X is greater than or equal to zero

• X is less than or equal to zero

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

What is true about all functions?

• All relations are functions

• All functions are relations

• Functions have duplicate Y values

• Functions have duplicate X values

Tags

CCSS.8.F.A.1