A school principal to observe how the natural circulation of air has an affect on Classroom morning. The principal randomly chooses a group of students of same age and grade and places them in a room with open windows the test scores of the classes are recorded and analyzed the end of the semester. How could this observation be changed into a valid experiment effects of air circulation

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:

its c or d   take a lucky guess my dude

answer: idk

step-by-step explanation: