Question

For each quadratic function, find the vertex of its graph.
y= -x^2 + 6x - 4

Answer 1

vertex is at \(-\frac{b}{2a}\) for the x coordinate

Answer 2

in your case you have \(-\frac{6}{2\times (-1)}=3\)
to find the second coordinate, replace x by 3 to see what you get

Answer 3

So 24