Is this a function or not

Yes

Step-by-step explanation:

For a relation to be a function it must have an individual x value for every y. Since the x-values never repeat this is a function. An easy way to tell this on a graph is the vertical line test if you can draw a vertical line anywhere on the graph and have it only intersect with the relation once then it 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

(0,,,0)

step-by-step explanation:

the table of x and y values is shown in the attached pic(part of question)

we have to decide according that graph

given points are (0, 0) (–1, 0), (2, 0)

when we graph these points on graph they show an increasing line as shown in the attached pic