Please help me with my hw thank you so much

The variable in a relation who’s value depends on the value of the independent variable is called what?

Thelime contains the point(-3,0) and parallel x-3y=3( show all work)

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning