Jina used a tots of 2 1/6 gallons of gas while driving her car. each hour she was driving, she used 7/8 gallons of gas. what was the total number of hours she was driving?

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:

3,000,540

step-by-step explanation:

x = 3 ± √(5+y)