Question

Variable y varies directly with variable x, and y = 9 when x = 5.

What is the constant of variation in decimal form?

Answer 1

y = kx is the constant of variation..

Plug in 'y' and 'x':

9 = 5k

Now divide 5 to both sides.

Answer 2

So 9 divided by 5 and 5 divided by 5?

Answer 3

Yes, but we don't really have to do '5 divided by 5' because it cancels out just leaving us with 'k'

So just divide 9 / 5.

Answer 4

1.8?

Answer 5

Yep! That's our answer.

Answer 6

Thanks

Answer 7

Np

Answer 8

Thanks for helping me cheat <3