Runner Race: y = mx + c

Amber starts at the start line (0 m) and runs 100 m to the finish (100 m). If Bob starts some metres from the start, where should he begin so they finish together?

0 10 20 30 40 50 60 70 80 90 100

💃🏻 🧜🏻‍♂️

Bob's Predicted Starting Position (m from start, between 0 and 100):
Your Predicted Formula (y = mx + c):

💃🏻 Amber

🧜🏻‍♂️ Bob

Runner Race: y = mx + c

Race Results