T Consider the function
у
4
3
2-
3
2.
4
5
-1
-3
-5 -4
-2
-2-
-3-
4
as x
The function
and a range of
Function fhas a domain of
increases

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:

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

the radius is 2 times the diameter.

step-by-step explanation: