Question

(2,1), (3,4), (5,6), (2, 7) - (3,1), (−3, 1), (0,1), (5,1) - (1,1), (2,2), (3,3), (4,4) - (4,1), (6, 7), (8, 9), (4,7)- (2,4), (2,5), (2,6), (2,8) which ones are function or no function.

Answer 1

9514 1404 393

Answer:

A, D, E . . . not a function

B, C . . . a function

Explanation:

Look at the lists of first numbers:

{2, 3, 5, 2} . . . 2 is repeated, not a function

{3, -3, 0, 5} . . . no repeats, is a function

{1, 2, 3, 4} . . . no repeats, is a function

{4, 6, 8, 4} . . . 4 is repeated, not a function

{2, 2, 2, 2} . . . 2 is repeated, not a function