A=v^2/r Solve for r please help quick

How many solutions does the nonlinear system of equations graphed bellow have?

Collin did the work to see if 10 is a solution to the equation r/4=2.4

Aline has a slope of . which ordered pairs could be points on a parallel line? check all that apply. (-8, 8) and (2, 2) (-5, -1) and (0, 2) (-3, 6) and (6, -9) (-2, 1) and (3,-2) (0, 2) and (5,5)