Question

I need help one last time.

Here are the answer choices.


Y = 72

Y = 16

Y = 32

Y = 1

Answer 1

y = 32

Solving Way #1:

This way uses the "tip" they give us of finding the relation between the first two values and then applying it to the second x.

k =
`(y)/(x)`

2 =
`(16)/(8)`

-

y = kx

y = (2)(16)

y = 32

Solving Way #2:

Since they vary directly which each other, we can set up a proportion to solve. I have y values on the top and x values on the bottom.

`(16)/(8) =(y)/(16)`

256 = 8y

32 = y

y = 32

Either way, when x is 16 y is 32.