Y-3.6=x^2
y=x^2+3.6
x=1, y=4.6
x=3,y=9.6
x=5,y=28.6
x=6,y=39.6
x=9,y=84.6
I don’t see any question, but if you meant by: “What does these two lines mean?” they mean that something is parallel to each other, for example two angles in geometry.
Hope this helps!
The answer i got was
-8+4r