I'm trying to network two laptops together using ethernet cable but it isn't working. why isn't it working

On modern network cards, this should just work.

It is advisable to give each laptop its own fixed IP address, such as 192.168.1.1 and 192.168.1.2 (with a netmask of 255.255.255.0)

However, you need to define what you expect to work. The first thing to try is ping the other machine from the command prompt, e.g.:

C:\> ping 192.168.1.2

Then, you can try to access shared network drives if you have enabled that. In the file explorer, try typing: \\192.168.1.2

answer: a, c

divide any of the y values by x values and you will always get 3 is the most simple way i can put it for you.