Anyone ? i’ll mark you the brainiest

a^2 + b^2 = c^2

4 ^2 + b^2 = 19^2

= 16 + b^2 = 361

= b^2 = 345

= b = 18.6

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:

it's both, now can you answer my most recent question?