Which graph represents a function with direct variation?

A coordinate plane with a U shaped line graphed with the minimum at (0, 0).
A coordinate plane with a V shaped line graphed with the minimum at (0, 0).
A coordinate plane with a line passing through (negative 4, 2), (0, 0) and (4, negative 2).
A coordinate plane with a line passing through (negative 2, negative 3), (0, 1) and (1, 3).

The transitive property of equality states that: o if a = b, then bra o if a = b, then ac = bc o if a = b and b= c, then a = if a = b and c= c, then a + b = b + c

How do you use the elimination method for this question? explain, because i really want to understand!

Afriend of mine is giving a dinner party. his current wine supply includes 10 bottles of zinfandel, 8 of merlot, and 11 of cabernet (he only drinks red wine), all from different wineries. (a) if he wants to serve 3 bottles of zinfandel and serving order is important, how many ways are there to do this? ways (b) if 6 bottles of wine are to be randomly selected from the 29 for serving, how many ways are there to do this? ways (c) if 6 bottles are randomly selected, how many ways are there to obtain two bottles of each variety? ways (d) if 6 bottles are randomly selected, what is the probability that this results in two bottles of each variety being chosen? (round your answer to three decimal places.) (e) if 6 bottles are randomly selected, what is the probability that all of them are the same variety? (round your answer to three decimal places.)