I’m not going to explain them all, but I can help you with 1 and 5, just so you get the idea.
y=mx+b
Y= the change between your ys
M= what you have to multiply by in your equation
X= the change between your xs
B= what you have to add in your equation
For question 1, we find that y= 5, and x= -7, both done by simple subtraction.