A quadratic function f is given.
f(x) = x2 + 6x + 8
(a) Express f in standard form.
f(x)
=
(b) Find the vertex and x- and y-intercepts of
f. (If an answer does not exist, enter DNE.)
vertex
(x, y)
=
x-intercepts
(x, y)
=
(smaller x-value)
(x, y)
=
(larger x-value)
y-intercept
(x, y)
=
(d) Find the domain and range of f. (Enter your answers
using interval notation.)
domain
range