Question

If y varies directly as x, find the constant of variation if y = 12 when x =1/2
36
4
6
12

Answer 1

direct variation implies:\[y=kx\]where 'k' is some constant.
use the values of x and y given to you to find 'k'.

Answer 2

y = kx ... 12 = k(1/2) ( is 36 part of the multiple choice answers ?)

Answer 3

yes

Answer 4

the answer is k=24

Answer 5

you don't seem to have it there but this is the right answer based on your info.

Answer 6

i mess up it was 1/3 not 1/2

Answer 7

then , k = 36