Answer:
The vertex is (-6,-30).
The vertex is usually written as (h,k) in most American schools I think.[
So h=-6 and k=-30.
Step-by-step explanation:
The given is in standard form,
, where
,
, and
.
There is a formula for computing the vertex while the given is in standard form which is:
.
So let's start with the x-coordinate there:
.
Now the y-coordinate of the vertex can be found by replacing your x's in:
with -6.



