2. The constant of proportionality between the number of junior varsity players (j) on the track team and the number of varsity players (V) on the team is
2/5.
If there are 45 varsity players on the track team. How many junior varsity players are on the team?

the correct is answer is a 9-sided polygon!

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.