we know that
A relationship between two variables, x, and y, represent a direct variation if it can be expressed in the form
or 
in this problem we have
the point
is on the line of direct variation
so
Find the constant of proportionality k
-------> substitute ------> 
the equation is

Remember that
If a point is on the line of direct variation
then
the point must satisfy the equation of direct variation
we're proceeding to verify each point
<u>case A)</u> point 

Substitute the value of x and y in the direct variation equation

-------> is true
therefore
the point
is on the line of direct variation
<u>case B)</u> point 

Substitute the value of x and y in the direct variation equation

-------> is true
therefore
the point
is on the line of direct variation
<u>case C)</u> point 

Substitute the value of x and y in the direct variation equation

-------> is not true
therefore
the point
is not on the line of direct variation
<u>case D)</u> point 

Substitute the value of x and y in the direct variation equation

-------> is true
therefore
the point
is on the line of direct variation
<u>case E)</u> point 

Substitute the value of x and y in the direct variation equation

-------> is not true
therefore
the point
is not on the line of direct variation
<u>case F)</u> point 

Substitute the value of x and y in the direct variation equation

-------> is true
therefore
the point
is on the line of direct variation
therefore
<u>the answer is</u>



