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5 votes
Jean drove 70 miles per hour for a total of 420 miles on a trip. She used the equation below to calculate the time, t, it would take her to complete the trip.

What is the constant of proportionality in the equation?
A.
6
B.
420
C.
t
D.
70

2 Answers

5 votes

Answer:

D. 70

Explanation:

Distance = k × time

70 = k(1)

k = 70

Distance = 70 × time

time to complete the journey:

420 = 70 × time

time = 420 ÷ 70

time = 6 hours

User Ikumen
by
7.2k points
7 votes

Answer:

D because she is constantly going 70 MPH

Explanation:

hope this helps

User Ivie
by
8.4k points

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