Question

Given the following quadratic equation find.
a) the vertex
b) the axis of symmetry
c) the intercepts
d) the domain
e) the range
f) the interval where the function is increasing
g) the interval where the function is decreasing
h) graph the function
y= -x^2-6x

Answer 1

I will complete the square for you

y = -1(x^2 + 6x+....)
= -(x^2 + 6x + 9 - 9)
= -( (x+3)^2 - 9)
= -(x+3)^2 + 9

I you are studying this topic, then you MUST be able to answer the given questions from this result.

Answer 2

wtf is this?