Question

. Mark drove 180 miles in 3 hours at

a constant speed. Let D equal the
distance traveled and t equal the time
traveled. Which of the following is
the constant of proportionality?

A) 3, as in D=3t

B) 60, as in D=60t

C) 180, as in D=180t

D) 540, as in D=540t

Answer 1

The answer is B because since you traveled 180 miles in 3 hours you take 180/3 which is 60 and since D is equal to the distance traveled and t is the time in hours traveled D=60(3) which is 180

Answer 2

d = 60t

Explanation:

distance = d

time = t

every hour 60 miles are travelled so its 60t

referring to 60*time eg 60*3 = 180