What is the vertical line test

The video tutorial explains the vertical line test to determine if a relation is a function. It demonstrates how a vertical line intersecting a graph more than once indicates a non-function. The tutorial provides examples, addresses common misunderstandings, and discusses special cases, such as cubic functions and open versus closed dots on graphs.

What does it mean if a vertical line touches a graph twice?

Explain the vertical line test and how it determines if a relation is a function.

Describe a scenario where a graph might appear to be a function but is not.

What is the significance of open and closed dots on a graph in relation to functions?

How can you identify a non-function from a set of points on a graph?