Question

VIRILI LER

U
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

Answer 1

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)