First to Answer:
The answer is 2 1/4
Have a great day!
Work:
9 divided by 4 is 2.25.
0.25 is equivalent to 1/4 and 2.00 is equivalent to 2.
put those together and you get 2 1/4.
BC..............................................
Yes this is a function
The reason why is because the x coordinates do not repeat. Each x value maps to exactly one y value. For any input, there is exactly one output. If you were to graph all of these points, then the graph would pass the vertical line test.
If we had something like (2,4) and (2,0) then the input x = 2 would lead to multiple outputs (y = 4, y = 0) which would not make it a function; however we don't have any repeated x values here.
Option A is the relationship which shows a direct variation.
Step-by-step explanation:
The direct variation is a relationship between two variables in which one is the multiple of the other. It is given by the relation

Option A:
For
and
,

For
and
,

Since, the constant k is equal for all the values of x and y in the table, this relationship is a direct variation.
Option B:
For
and
,

For
and
,

Since, the values of constant k is not equal for all the values of x and y in the table, this relationship is not a direct variation.
Option C:
For
and 

For
and 

Since, the values of constant k is not equal for all the values of x and y in the table, this relationship is not a direct variation.
Option D:
For
and 

For
and 

Since, the values of constant k is not equal for all the values of x and y in the table, this relationship is not a direct variation.
Thus, Option A is the relationship which shows direct variation.
15/8 would be the slope u have to subract