Respuesta :

If the c axus is 2 then you go right by two (simple) then with your y axus you go up four (simple) thrn you subtract backwards until your dots are lined up
If it is parallel, It has no slope. So:

y = mx + b
y = 0x + b

Now lets plug in our point:

y = 0x + b
4 = 0(2) + b
4 = b

So;

y = 0x + 4
y = 4

Hope this helps!