Answer:
(-1, 7) and (-6, -14) are solutions
Two !!!! ... unless this is some riddle and there's a huge in depth meaningful answer i'm unaware about o.O
I’m not extremely good at math but I think you need to make -x-y=1 into y=mx+b form and then solve your new equation!
V=(1/3)hπr^2 where h=height and r=radius
given
radius=3
height=2a
r=3
h=2a
v=(1/3)hπr^2
v=(1/3)(2a)π(3)^2
v=(1/3)2aπ9
v=6aπ
so the expression would be some variaant of v=6aπ
Then answer should be w = 4/3 if that’s what you lookin for