@ https://flvsft912.flvs.net/educator/student/examform.cgi?nbrnjos5*rhernandez590*sit=75SwkcqgAKL8c*5274*0015 Grades 9-12 Lessons Assessments Gradebook Email Tools My Cou A railroad's track can be determined using the following graph. 10 - N WA O/ -10 9 8 7 6 -5 -4 -3 -2 -10 1 2 3 4 5 6 7 6 9 10 -1 8 6 do to do on & de Several different roadways are in the same region as the railroad. Part A: A highway's path can be found using the equation 2x + 3y = 21. Use the graphs of the functions to determine the number of intersections there will be between the railroad and the highway, and explain completely. (5 points) Part B: A turnpike's route is determined by the equation y = ~ x2. Prove algebraically how many intersections there will be between the railroad and the turnpike, showing all necessary work. (5 points)