Find the equation of the axis of symmetry and the coordinates of the vertex of the graph of the function y = –2x2 +6x – 1

Question

anonymous · Answer

@JoannaBlackwelder

anonymous · Answer

is that,$$y=-2x^2+6x-1$$?

triciaal · Answer

the axis of symmetry is the line that has the x- coordinate of the vertex

triciaal · Answer

the vertex is (h, k)  where h = -b/(2a)  from the standard form

triciaal · Answer

vertex form of the equation   a(x-h)^2 + k = 0

triciaal · Answer

how would you complete the square for the given function?

anonymous · Answer

Yes @RSTONE2017

anonymous · Answer

I don't know how to solve it @triciaal

triciaal · Answer

attachment

triciaal · Answer

the red line is the axis of symmetry. the "mirror" of the parabola

triciaal · Answer

from the given equation in standard form  identify a, b and c

triciaal · Answer

what is -b/(2 a )  ?

triciaal · Answer

are you here?

anonymous · Answer

yeah but don't know what to do or how to solve :( @triciaal

triciaal · Answer

what is the standard form of a quadratic  equation?