Question

Identify which table shows a direct variation.
Two tables. For each table the column headings are x and y. Table 1 has column 1 values 3, 4.5, 7 and column 2 values 7.5, 11.25, 17.5. Table 2 has column 1 values 1.5, 8, 13 and column 2 values 3, 12, 19.5.

A.
both tables

B.
Table 1 only

C.
Table 2 only

D.
neither table

Answer 1

@texaschic101

Answer 2

http://static.k12.com/calms_media/media/1418000_1418500/1418044/1/6f09e69b6fb92f6be38add43d83561102cc91a88/FGA_130919_161133.jpg

Answer 3

do you know the answer @texaschic101

Answer 4

I might do this a little bit different then others...but direct variation reminds me of proportions.

table 1 :
3/7.5 = 4.5/11.25
cross multiply
(3)(11.25) = (7.5)(4.5)
33.75 = 33.75 (correct)
This is direct variation

table 2 :
1.5/3 = 8/12
cross multiply
(1.5)(12) = (3)(8)
18 = 24 (incorrect)
This is not direct variation

Answer 5

thanks

Answer 6

sure thing :)

Answer 7

so it's b table 1