Answer:
(-1,0)
Step-by-step explanation:
the vertex is the highest or lowest point of a function where both lines meet and since (-1,0) is the lowest point and the next 2 are above it, so that makes (-1,0) the vertex.
Hope it helps the explanation is a little poor but I tried my hardest.
I attached a photo and if you look you can kind of see what I'm saying.
