Question

Given the following function, find:
(a) vertex, (b) axis of symmetry, (c) intercepts, (d) domain, (e) range,
(f) intervals where the function is increasing,
(g) intervals where the function is decreasing
f(x)=-7x^2-14x-3

Answer 1

x=-b/2a
x=-(-14)/2(-7)
x=14/-14=-1

-7(-1)^2-14(-1)-3
-7+14-3=4

Vertex = (-1,4)

Answer 2

axis of symetry will be -1