Question

Which set of ordered pairs represents a function?

A. (3,3), (3, 2), (3,1), (3,0)
B. (1,2), (7,9), (5,8), (1,7)
C. (5,4), (6,3), (7,2), (8,1)}
D. (7,8), (8,7), (7,9), (9,7)

Answer 1

the answer is A

Explanation:

to find the function of the ordered pairs, the first number (X) each of the pairs need to be the same, and the (y) or second numbers all need to be different.

like

for B- (1,2) (7,9) (5,8) (1,7) - for it to be a function all the first numbers would have had to be 1 or all them should have been the same first number.

for A- (3,3) (3,2) (3,1) (3,0)- its a function because the first numbers are all the same- all 3s- and the second numbers are all different.

hope this helped!