I need help with #15 and #16. I have provided the graph and questions down below. Thank you !

15. The zoo staff plans to put in a new road that is equidistant from the Serengeti Stream and the Crocodile River. Describe, using geometric terms, how that road is related to the Serengeti Stream and the Crocodile River. (1 point) 16. Write linear equations in slope-intercept form to model the Serengeti Stream and the Crocodile River. (4 points: 1 point for the equation for the Crocodile River, 3 points for the equation for the Serengeti Stream) Extending the Problem: The Serengeti Stream flows into the Crocodile River at the point (0, 4). The Serengeti Stream follows a straight-line path that goes through (6, 7), as shown. 12 11 10 Serengeti stream 9 ( 7 , 9 ) ( 3 , 7 ) 1 (6, 7) (10, 6) Crocodile river 3 2 2 3 4 5 6 7 B 9 10 11 12