Identifying Functions in GED Math

The video tutorial covers the concept of functions, emphasizing their importance in GED and algebra. It defines functions mathematically and practically, explaining input and output variables. The tutorial explores different types of relations, such as equations and graphs, and how to identify functions using examples. The vertical line test is introduced as a method to determine if a graph represents a function. The session concludes with practice problems to reinforce the understanding of functions.

What is a function in the context of algebra?

• A mathematical operation performed on numbers

• A type of graph that represents data

• A formula that calculates the area of a shape

• A relationship where each input has exactly one output

What is the role of a function in algebra?

• To graph data points

• To calculate derivatives

• To provide a rule for every possible input

• To solve for X only

What is commonly used as the independent variable in functions?

• Z

• W

• Y

• X

Which variable is often called the dependent variable in a function?

• X

• Y

• W

• Z

Which of the following is NOT a type of relation mentioned in the video?

• Graph

• Word problem

• Matrix

• Equation

What can be concluded if the same X value in a function maps to different Y values?

• The function is only valid in calculus

• It is not a function

• The function is still valid

• It indicates a strong correlation

In the context of functions, what does it mean for X to be 'faithful'?

• X values are always integers

• X values are constants

• X can have multiple Y values

• X does not repeat with different Y values

What does the vertical line test determine?

• The maximum points on a graph

• The slope of a graph

• If a graph is a function

• The intersection points on a graph

What happens if a vertical line crosses a graph at more than one point?

• It indicates the graph is not a function

• It confirms the graph is a function

• It measures the graph's symmetry

• It calculates the area under the graph

How can you make a non-function graph into a function by altering points?

• Adding more X values

• Drawing a new graph

• Changing all Y values

• Removing conflicting points