if someone can check all of these or at least a couple that would be great!
1.
2,
3.
4.
All look good.
You can check with desmos.
eg
https://www.desmos.com/calculator/ibnj40jw8p
for some reason it isnt allowing me to give it a like, but thank you for your help!
Thanks Jenny, just another bug in the system (not being able to give likes I mean)