Answer:
(0,-5). y=mx+b or -5=0 × 0+b, or solving for b: b=-5-(0)(0). b=-5.
(2,-5). y=mx+b or -5=0 × 2+b, or solving for b: b=-5-(0)(2). b=-5.
y=-5
All in all you would get the answer x+y=1.
If I'm reading this right, than all 9 angles are acute?
Answer:
idk but you can ask your teacher for help