Question

Consider the quadratic function:
f(x) = x2 – 8x – 9

Vertex:
What is the vertex of the function?

Answer 1

x = -b/2a = 8/2 = 4 

y = 16 -8*4 -9 = 16 - 32 -9 = -25

the wertex is (4,-25)

Answer 2

Answer: it’s 4,-25

Step-by-step explanation:

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