Answer:
see explanation
Step-by-step explanation:
Any graph of a proportional relationship is a straight line graph passing through the origin.
the graph here does that and so represents a proportional relationship
using the point (2, 24,000 ) , then
unit rate = 24,000 ÷ 2 = 12,000 miles per hour
in 5.5 hours the probe travels 5.5 ×12,000 = 66,000 miles
