The formula (y=f(x)=9/5x+32) is used to convert from (x) degrees Celsius to (y) degrees Fahrenheit. The formula (y=g(x)=5/9(x-32)) is used to _______.
a) convert from (y) degrees Fahrenheit to (x) degrees Celsius
b) convert from (x) degrees Fahrenheit to (y) degrees Celsius
c) convert from (y) degrees Celsius to (x) degrees Fahrenheit
d) convert from (x) degrees Celsius to (y) degrees Fahrenheit