What is the slope of this line? y=-3x+1

How do i do this activity, is appreciated

Marion has a bicycle that she is planning to take for a ride. the rim of the rear wheel lies 41 cm from the center of the wheel. the tire itself has a thickness of 3 cm. in order for marion to ride her bicycle 96,712 cm approximately how many rotations will the rear wheel make?

If there are 825 students at cherry hill high school and 4 out of every 5 students voted in the student council election, how many students voted?