SOLUTION: The ordered pairs are for a direct variation. Find the missing value. I know that the direct variation form is y=kx but I'm not sure how to use it to find the missing value of the

Algebra ->  Equations -> SOLUTION: The ordered pairs are for a direct variation. Find the missing value. I know that the direct variation form is y=kx but I'm not sure how to use it to find the missing value of the       Log On


   

Question 303085: The ordered pairs are for a direct variation. Find the missing value. I know that the direct variation form is y=kx but I'm not sure how to use it to find the missing value of the ordered pair.
(3,4) and (9,y)
Answer by Mathematicians(84) About Me  (Show Source):
You can put this solution on YOUR website!
Hmm interesting, the way I see this can be done is:
3k+=+9 X coordinates
and

Then from the second equation, we find that:
highlight%284+%2A+3+=+12+=+y%29