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

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

Step-by-step 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.

The answer to this question it D.

18

step-by-step explanation:

draw the shape and you will see that f and k are actually at adjacent vertices (points of the hexagon that are neighboring).   so find the distance between (1,2) and (4,2).   that is easy since (1,2) and (4,2) is just a vertical distance to count, which is 3.   it is a regular polygon which means all sides are congruent.   you have 6 sides (hexa) so multiply 6 by 3 to receive 18.