SOLUTION: what is the vertex of f(x)=-x^2+8x-19

Question 515228: what is the vertex of f(x)=-x^2+8x-19
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
what is the vertex of f(x)=-x^2+8x-19
---
a = -1 ; b = 8 ; c = -19
---
Vertex occurs where x = -b/(2a) = -8/(2*-1) = 4
f(4) = -16 + 32 -19 = -3
---
Vertex at (4,-3)
===================
Cheers,
Stan H.
============
RELATED QUESTIONS
What is the ordered pair of the vertex of... (answered by ewatrrr)

Let f(x)= 2x^2-8x+7. What is the vertex -f the graph of... (answered by fcabanski)

Find the vertex, the line of symmetry, the maximum or minimum value of the quadratic... (answered by solver91311)

Find the vertex, the line of symmetry, the maximum or minimum value of the quadratic... (answered by Fombitz)

what is f(x)=96+12x+8x+x^2 in vertex... (answered by stanbon)

and this problem also. Thank you so much.. f(x)=2x^2-8x+3 What is the... (answered by checkley71)

What is the vertex of the graph of:... (answered by Love math)

Show the solution and vertex of... (answered by greenestamps,Alan3354,josgarithmetic)

write y=x^2-8x+19 in vertex... (answered by robertb)