Question

For the function f(x) = –2(x + 3)2 − 1, identify the vertex, domain, and range.

Answer 1

can someone please help?

Answer 2

\[f(x)=–2(x + 3)^2 − 1 ?\]

Answer 3

\[f(x)=-2(x+3)^2-1=-2x^2-12x-19\]
the vertex:
x=\[\frac{ -b }{ 2a }\]=\[\frac{ -12 }{ 2*2}=-3\]
y=-1
vertex >> (-3,-1)
domain: all Real Numbers, \[-\infty \:<x<\infty \]
,\[\left(-\infty \:,\:\infty \:\right)\]

range:\[\:(-\infty \:,\:-1]\]