Question

Variable y varies directly with variable x, and y = 5 when x = 8.

What is the value of x when y = 15?

Answer 1

use same formula and find k first

Answer 2

can u set it up for me

Answer 3

in draw

Answer 4

nope sorry :-(
it's your turn

Answer 5

look at the previous post :-)
i want you to learn it

Answer 6

8/15

Answer 7

use first two x and y values to find k
and then replace y by 15 to find x

Answer 8

replace x by 8 and y by 5 and then find k

Answer 9

18

Answer 10

or k=5/8 i still don't get it