How do me find the mean of the data sets

To find the mean of a data set you have add all the values together and divide by the number of values in the set. The result is your mean

Step-by-step explanation:

Such as finding the mean of 1, 2, 4, 7, 9 as an example

Adding those numbers together you get 23. You then divide 23 by 5, given that there are 5 values above. 23/5 is 4.6. The mean would be 4.6

d

step-by-step explanation:

d

the direct variation says that:

then the equation is of the form is given by:

            where k is the constant variation.

from the given table:

consider any value of x and m(x)=y

x = 2 and m(x)=y = 3

substitute these value in [1]; we have;

divide both sides by 2 we get;

⇒

check:

put x = -1 and m(x) = -1.5

substitute in the equation:

-1.5 = -1.5                   true

therefore, the function m(x) represents a direct variation

graph of this function as shown below: