A survey of 1,172 tourists visiting Orlando was taken. Of those surveyed: 265 tourists had visited the Magic Kingdom
298 tourists had visited LEGOLAND
94 tourists had visited both the Magic Kingdom and LEGOLAND
52 tourists had visited both the Magic Kingdom and Universal Studios
55 tourists had visited both LEGOLAND and Universal Studios
19 tourists had visited all three theme parks
99 tourists did not visit any of these theme parks
How many tourists only visited the Universal Studios (of these three)?

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:

b and c

only 10/60 isn't equivalent

hope this : )