im totally lost with my homework
this is all gibberish to me.
What are the coordinates of the vertex of the graph of the quadratic function
y= -x^2 -1?
A.(0,-1)
B.(0,2)
C.(-1,-1)
D.(-1,0)
It reaches its highest value when x = 0. At that point, y= -1. That is the vertex.
It is an "upside down" parabola.