Answer:
Equation of a line that models y is:
y=40-15x
Step-by-step explanation:
Dudley wants to cover 40 miles.
If he travels 30 miles every 2 hours
in 2 hours he covers 30 miles
i.e. 1 hour he covers 15 miles
Miles he is left with after 1 hour=40-15
Miles he is left with after 2 hours=40-15-15=40-15×2
Miles he is left with after x hours of biking=40-15x
If y represents the number of miles he has left to travel, after biking x hours
then, y=40-15x
Hence, equation of a line that models y is:
y=40-15x
