The equation above shows how temperature f, measured in degrees fahrenheit, relates to a temperature c, measured in degrees celsius. based on the equation, which of the following must be true?

a temperature increase of 1 degree fahrenheit is equivalent to a temperature increase of
5
9
degree celsius.
a temperature increase of 1 degree celsius is equivalent to a temperature increase of 1.8 degrees fahrenheit.
a temperature increase of
5
9
degree fahrenheit is equivalent to a temperature increase of 1 degree celsius.
a) i only
b) ii only
c) iii only
d) i and ii only