9. Which situation could NOT represent a proportional relationship? A. The amount a babysitter who makes $7.50 per hour earns in h hours
B. The cost of purchasing p pounds of oranges for $1.35 per pound
C. The number of gallons of water in x barrels with 13 gallons of water in each barrell
D. The weight in x weeks of a cat that gains 1 pound per week if its starting weight is 4 pounds​

The line above the 6 and 3 means that those are recurring, so the full number is 2.63636363 Recurring numbers can never be defined by decimals, because there is no end to the numbers repeating. It can only be defined by a fraction, so that means the number is irrational. Because it is between integers (a fraction that can't be simplified and will give a recurring decimal), it can't be a real number. All rational numbers are real numbers, but no irrational number can be a real number.

Therefore, your answer is 'Irrational number'.

Hope I helped!