cousework for photography class (not essay, just answer two questions)

Business photography class assignment. Please answers the two questions below, about 1 paragraph for each question. use simple wording, straight to the point. No citation need but do some research about transformative and derivative in photography. again, this is not an essay format is just two questions for coursework/ assignment.

1) What is the difference between transformative use and derivative use when it comes to copyright law?

2)  How will this affect your own photography practice? ( answer this as you are planning to open a future photography business)