Question

http://prntscr.com/8vfv47

Answer 1

@Directrix

Answer 2

You can get the x-coordinate of the vertex by this:

x ver = -b/2a = -(6)/[2(-3)] = ?

Answer 3

i got 1

Answer 4

That is what I got, too.

Answer 5

y = -x^2 + 6x -2

x coodinate of vertex is -6/(-2) = 3

Run that through the equation to get the y-coordinate:

y = - (3)^2 + 6*3 -2 = ?

Answer 6

i got 7

Answer 7

Which gives the vertex to be (3,7).