Question

Oliver is doing a study on age and shoe size. He has collected the data shown above.

Do the ordered pairs (x, y) he has collected form a function

Answer 1

The answer to this question it D.

Answer 2

Answer: D) No, because for some x's there are more than one y's.

Age and Shoe Size

x (age) y (size)

8 7

9 8

10 9

8 9

14 9

15 11

10 10

33 9

27 9.5

45 10.5

Explanation:

The definition of a function states that for every x there is only one y. If you look at the data table for an x- value of 8 there are 2 different y-values 7 and 9. Therefore the correct answer is No, because for some x's there are more than one y's.