A bicycle rider can ride 12 kilometers in 40 minutes, 15 kilometers in 50 minutes, or 3 kilometer in 10 minutes. Are these ratios proportional? Support your answer with calculations. Kilometers 55 50- 45- 40- 35 30- 25 20 15- 10 554 10 15 20 25 30 35 40 45 55 Minutes If they are, also create a proportional graph for these values.
