You randomly draw a marble from a bag, record its color, and then replace it. You draw a blue marble 13 out of 20 times. What is the experimental probability that the next marble will be blue? Write your answer as a fraction, decimal, or percent.

its 4 because 2 times 2 is 4, if you double the number two you get four

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: