Question

What is the vertex form of the equation?
y = –x^2 +12x – 4

Answer 1

@ehuman do you think you can help?

Answer 2

The x coordinate of the vertex can be found with:
-b/2a
When your quadratic is in standard form.
The y coordinate of the vertex can be found by plugging the x coordinate of the vertex into the quadratic and solving for y.