Which of the following sets of ordered pairs represents a function? А:(-5, 10), (0, 15), (5 , 10) B:(3,5). (3,9), (4,2) C: (9.6). (6 , 3), (9,3) D: (0,6). (12. 10), (0.-6)

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