Functions are one of the most fundamental concepts in mathematics, serving as a cornerstone for topics in algebra, calculus and beyond. Basics of functions are stepping-stone to success in functions ...

You might confuse a point on the X-axis with the Y-axis and mess up your function. With OneNote, you can save trees by handwriting your equation, selecting the lasso tool, opening the Math Assistant ...

Two things: I would explain what U means in interval notation, and I would make the graphs easier to read. Also, specify how many decimal places to take the answers. The AP exam standard is 3.