Free Professional Development

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Author:
Kate Sidlo

By the end of this tutorial students will be able to identify if a table shows a function using the definition of a function.

Students will be able to check their assumption by plotting the points/graphing the equation and using the vertical line test.

Tutorial

1) Take notes from the podcast

**FUNCTION:** A relationship where every input has one and only one output

**INPUT:** A term or number that is plugged into a relationship; the x-variable in an ordered pair

**RELATIONSHIP:** A comparison of terms, variables, and/or numbers (typically an equation or inequality)

**OUTPUT:** A term or number that is the answer or solution to a relationship; the y-variable in an ordered pair

**VERTICAL LINE TEST:** A test that uses vertical lines to check if a graph is a function. Each vertical line can intersect a graph only once for a graph to be a function.