Kevin is trying to find a white sock in his drawer. he has 16 white socks, 4 brown socks, and 6 black socks. what is the probability that he pull out either a black or brown sock, puts it back, and then pulls out a white sock? a) 9/13 b) 20/13 c) 40/169 d) 96/169

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: