Question

find the y-int, the vertex and the line of symmetry and graph the following: y=-x squared-4x-1

Answer 1

can someone help me solve this?

Answer 2

y-int is when x=0 -> y=-1
For vertex and line of symmetry, we need the to "complete the squares".
y=-x²-4x-4+4-1
y=-(x²+4x+4)+(4-1)
y=-(x+2)²+3
so, vertex is (-2,3), symmetry is x=-2