Question

Removing which ordered pair from the table would make the relation a function of x?

x y
1,7
4,7
2,2
4,1
3,9

(1, 7)
(2, 2)
(3, 9)
(4, 1)

Answer 1

The answer is (4, 1). To make a table a function, the x values must not repeat. The y values aren’t as important as the x so they can do whatever.

Answer 2

Answer: correct choice is D

Explanation:

You can see that x=4 takes two different values y=7 and y=1. You should remove one of these ordered pairs (4,7) or (4,1).