Question

Tell whether x and y are in a proportional relationship. if so, find the unit rate. Let y be the temperature x hours after midnight. The temperature is 60 degrees Fahrenheit at midnight and decreases 2 degrees Fahrenheit every 1/2 hour.
a. yes, 1 degree Fahrenheit per hour
b. yes, 2 degrees Fahrenheit per hour
c. yes, 4 degrees Fahrenheit per hour
d. no

Answer 1

C. yes, 4 degrees F per hour