Which of the following equations matches the proportional relationship?

(A) A cell phone rate plan costs 6 cents per minute.

y = 0.06x

(B) A bag of 10 apples costs $6.

y = 60x

(C) A car is driving at an average speed of 60 miles per hour.

y = 0.60x

(D) A person burns 6 calories per minute using a rowing machine.

y = 60x

Option (A) will be the correct match.

Step-by-step explanation:

We are asked to find which of the given equations matches the proportional relationship.

The only option (A) matches,

It is given that a cell phone rates plan costs 6 cents per minute.

Now, 6 cents is equivalent to $0.06.

Therefore, for a call of duration x minutes the cost of the call y, in dollars, will be given by

y = 0.06x

So, option (A) will be the correct match. (Answer)