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Question

Gas costs $2.50 per gallon. Write and equation to represent this proportional relationship.

Question 5 options:

y = 2.50x

y = 2.50

y = -2.50x

Non-proportional

Answer 1

To represent the proportional relationship between the gas cost and the number of gallons (where \( y \) is the total cost and \( x \) is the number of gallons), you can express it with the equation:

\( y = 2.50x \)

This equation shows that the total cost \( y \) is proportional to the number of gallons \( x \), with a constant rate of $2.50 per gallon.

So the correct answer is: y = 2.50x