Laurie is measuring the temperature in her back yard. At 4 P. M. she measures 8 degrees Celsius. For the next 2 hours, the temperature decreases by 3 degrees Celsius per hour. What is the temperature at 6 P. M. degrees Celsius?

The temp at 6P.M. Is -14°C

Step-by-step explanation:

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:

step-by-step explanation: