Y should also be halved.
For example, if x=4 and y=2, x=2y.
If x is halved for x=2, you get 2=2y, or y=1, which is still one half of x, so the proportion remains the same.
Answer:
each ouce is worth 25 cents
solution
in order to solve this you need to create proportions so
<u>10 ounces </u>
per $2.50
well you want this to be a unit rate so you would have
<u>10 ounces </u> =<u> 1 ounce</u>
2.50 x
to get to the unit rate, you can see that you divided 10 from 10 ounces so you would do the same to the bottom ...
2.50/10 which is equal to 0.25.