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VIRILI LER
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Graphing Quadratic Functions
Graph this function: f(x) = x2 - 4x - 5
Step 1: Identify a and b.
a = b = -40
Step 2: Find the vertex using the formula 1 =
I=
Check

Respuesta :

ghanami

Answer:

Step-by-step explanation:

hello :

a= 1      b= -4  

the vertex is : ( -b/2a  ; f(-b/2a)

-b/2a = - (-4)/2 = 2

f(2) = (2)²-4(2)-5 = 4-13= -9

the vertex is : (2  ; -9)

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