How does the graph of a base function move horizontally in the coordinate plane? Join Mr. Donovan as he explores the impact to the graph of a function if the input is changed before the function is executed. Students will need paper, a pencil, a ruler, graph paper, and a highlighter. We also suggest having the Classwork for the lesson. You can find that in your workbook, if you have one, or you can use the link below to access the pages.