Answer:
i wouldsay b
Step-by-step explanation:
Answer:

Step-by-step explanation:
Refer to file. Trying something different. Should be easier to read than text format and is easier than mathML.
y/x = k
6.4/4 = 1.6
11.2 / 7 =1.6
16/10 = 1.6
20.8 /13 =1.6
This is a direct variation and the constant is 1.6
y=1.6x
Answer: 
Step-by-step explanation:
If you meant to solve for "z", then refer to the attachment below.
Confusing question but I would get 0, as if you have 4cm, that squared = 16cm^2. Therefore if it were increasing anymore, then you would not be able to get a value of 16.