Determining Non-Function Graphs Using the Vertical Line Test

The video tutorial discusses how to determine if a graph represents a function using the vertical line test. The instructor explains that a graph is not a function if a vertical line intersects it at more than one point. The tutorial includes an analysis of four graphs, identifying which one does not pass the vertical line test, thus not being a function. The lesson concludes with a summary of the key points covered.

What is the main objective of the lesson introduced at the beginning of the video?

• To determine which graph is not a function

• To learn about different types of graphs

• To understand the history of functions

• To explore the uses of functions in real life

What is the vertical line test used for?

• To identify the x-intercept of a graph

• To calculate the area under a curve

• To determine if a graph is a function

• To find the slope of a line

How does the vertical line test determine if a graph is not a function?

• If the line is parallel to the x-axis

• If the line does not touch the graph at all

• If the line intersects the graph at more than one point

• If the line touches the graph at exactly one point

Which graph was identified as not being a function using the vertical line test?

• Graph B

• Graph C

• Graph A

• Graph D

What happens when the vertical line test is applied to a graph that is a function?

• The line intersects the graph at multiple points

• The line does not intersect the graph

• The line is parallel to the graph

• The line intersects the graph at exactly one point