What is the vertex of the quadratic function: y=-3 (x+5) ^2-4

V = (-5,-4)

to find the vertex you use V=-b/2a

y=-3 (x+5) ^2-4

which then turns to

y=-3x^2-30x-79

a=-3

b=-30 x=30/2 (-3)

x=30/-6

x=-5

plug x into the equation and solve for y = - 3 (-5) ^2-30 (-5) - 79

y=-4

x=-5 y=-4 Vertex = (-5,-4)