Using the Vertical Line Test

The video tutorial explains how to use the vertical line test to determine if a graph represents a function. It involves analyzing graphs by passing a pencil vertically across them to see if it intersects more than one point at a time. If it does, the graph is not a function. The tutorial also covers how to identify non-function relationships in a table by ensuring that each input has a unique output. The lesson concludes with a review of the key concepts, emphasizing that vertical lines are not functions and that each input in a function must have a single output.

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