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-Prove algebraically how many intersections there will be between the railroad and the turnpike, showing all
necessary work. (5 points)