For 48 points ! show/explain your answer and work

c  This is the direct variation

Step-by-step explanation:

The equation for direct variation is y= kx

Solving this for k

y/x =k

So y/x must be a constant

a.  9/3 =3

2/7 does not =3  so this is not a direct variation

b 1/2 = .5

-3/6 = -.5

This is not the same so this is not a direct variation

c.  27/9 =3

18/6 =3

9/3 =3

This is a direct variation with a constant of 3

d 5/-7 = -5/7

1/-3 = -1/3

This is not the same so this is not a direct variation

C

Step-by-step explanation:

The equation you are looking for must look something like y = k*x

The easiest way to find it is to try 2 points to see if k would be equal in both cases. Do this for each choice.

A

k is not the same in both case. A is not the  answer.

B

Using the steps above

B is not the answer.

C

C is the answer

You can try D yourself

answer: the anser is 3

step-by-step explanation:

c- 2o is equal to 9

where's the diagram?

step-by-step explanation: