Is a relation that is also a function. {(1,6), (1,7), (7, 8), (8, 9)}
{(2,3), (3, 2), (2, 4), (4, 2)}
{(0, 1), (0, 2), (0, 3), (0,4)}
|{(1, 1), (3, 2), (6,3), (8,4)}

The relation {(1, 1), (3, 2), (6,3), (8,4)} is also a function ⇒ D

Step-by-step explanation:

The relation formed from a set of ordered pairs could be a function if every x-coordinate has only one y-coordinate corresponding to it

Examples:

Let us check all the relation to find which one is a function

∵ The relation is {(1, 6), (1, 7), (7, 8), (8, 9)}

∵ At x = 1, y = 6 and 7

→ x has two values of y

∴ The relation is not a function

∵ The relation is {(2, 3), (3, 2), (2, 4), (4, 2)}

∵ At x = 2, y = 3 and 4

→ x has two values of y

∴ The relation is not a function

∵ The relation is {(0, 1), (0, 2), (0, 3), (0,4)}

∵ At x = 0, y = 1, 2, 3, and 4

→ x has four values of y

∴ The relation is not a function

∵ The relation is {(1, 1), (3, 2), (6,3), (8,4)}

∵ At x = 1, y = 1

∵ At x = 3, y = 2

∵ At x = 6, y = 3

∵ At x = 8, y = 4

→ Every x has only one value of y

∴ The relation is a function

∴The relation {(1, 1), (3, 2), (6,3), (8,4)} is a function

14.3

step-by-step explanation:

add all the numbers together.

9 + 12 + 15 + 16 + 17 + 17 = 86

now, divide 86 by how many numbers we have: 6.

86 / 6 = 14.3