Suppose that 80% of people surveyed answered 'Yes' to a certain question. Let the digits 0−7 to represent 'Yes' and let 8 and 9 represent 'No'. Use the random numbers shown below to determine how many people out of 20 answered 'No'. 5
6
14
15

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:

i believe it is 0.1m because the measurement of 30.4m limits how precise you can be

you can only be as precise as the least precise measurement