PLEASE HELP WITH 3 and 4 and 5-6 if you can Plz help will mean so much

High schoolmathematics 5 points keith is the leading goal scorer for a team in an ice hockey league. last season, he scored 42 goals in 82 games. assuming he scores goals at a constant rate, what is the slope of the line that represents this relationship if the number of games is along the x-axis and the number of goals is along the y-axis?

The graph below represents the number of dolphins in a dolphin sanctuary. select all the key features of this function.

Could someone me with this question i’ve been stuck on it for 20 minutes