64 divided by 16= 4
3x4=12
if Mckenzie uses 64 tea bags she will need to use 12 cups of sugar
Nobody wants to do these because, I don't know why.
Answer:

Yes, y is a function of x.

Step-by-step explanation:
For a proportional relation, the equation is given by:

where k is the unit rate of change.
We were told that, Lin's sister earns $9.6 per hour.
This means k=9.6.
We substitute to get:

We could rewrite this as

Yes, y is a function of x.
To obtain an equation describing x as a function of y, we solve for x to get:

Yes, because there are two pairs of congruent corresponding angles