Question 700758: instructions: graph each quadratic function. name the axis of symmetry and the coordinates of the vertex.
1. y=-x^2+7x-2 Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! graph each quadratic function. name the axis of symmetry and the coordinates of the vertex.
y = -x^2+7x-2
-----
The 1st coordinate of the vertex and the equation of the axis of symmetry
are x = -b/(2a) = -7/(2*-1) = -7/-2 = 7/2
------
The 2nd coordinate of the vertex is f(7/2)
-----
f(7/2) = -(7/2)^2 + 7(7/2) -2 = -(49/4) + (49/2) - 2
---
= (-49 + 98 - 8)/4
----
= 41/4
----
Vertex: (7/2 , 41/4)
-------
=========================
Cheers,
Stan H.
(