Question

Which of the following sets of ordered pairs represents a function? A. { (-10, -4), (17, 11), (4, 10), (4, -14) } B. { (7, 8), (-21, -8), (7, -8), (-21, 8) } C. { (14, 8), (-14, -8), (8, 14), (-8, -14) } D. { (14, 8), (14, -8), (8, 14), (8, -14) }

Answer 1

C

Explanation:

because for any domain ,you will get only one range value ,

but ,there are two range values for 4 in A;

two range values for 7, and also for 21 in B;

two range values for 14 and for 8 in D