This video tutorial covers the concepts of relations and functions in mathematics. It explains how to identify relations and functions using ordered pairs, mapping diagrams, tables, and graphs. The video emphasizes the importance of unique x-values in determining functions and demonstrates the vertical line test for graphical identification. It also discusses how to isolate y in equations to check for functions. The tutorial includes examples to illustrate these concepts and encourages viewers to practice independently.

What is a relation in mathematics?

• A mathematical operation

• A type of graph

• A single number

• A set of ordered pairs

Tags

CCSS.8.F.A.1

Which of the following represents the domain in a set of ordered pairs?

• The sum of the pairs

• The second values

• The product of the pairs

• The first values

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

What makes a relation a function?

• All y values are the same

• All x values are unique

• All pairs are positive

• All pairs are negative

Tags

CCSS.8.F.A.1

In a mapping diagram, what indicates that a relation is not a function?

• An x value with multiple arrows

• A y value with no arrows

• An x value with no arrows

• A y value with multiple arrows

Tags

CCSS.8.F.A.1

When using tables to identify functions, what should you look for?

• Positive values

• Negative values

• Repeating x values

• Repeating y values

Tags

CCSS.8.F.A.1

How do you determine if an equation represents a function?

• Isolate x

• Find the product of x and y

• Isolate y

• Find the sum of x and y

Tags

CCSS.8.F.A.1

What is the vertical line test used for?

• To determine if a graph is linear

• To determine if a graph represents a function

• To find the range

• To find the domain

If a vertical line touches a graph at more than one point, what does it indicate?

• The graph is a function

• The graph is not a function

• The graph is linear

• The graph is quadratic

In a step function, what should you remember about open circles?

• They are included values

• They are not included values

• They represent the domain

• They represent the range

Tags

CCSS.HSF-IF.C.7B

What does it mean if a vertical line touches three points on a graph?

• The graph is not a function

• The graph is a function

• The graph is linear

• The graph is quadratic