The quadratic equation is y = x^2 - 4x -5

how do i find the vertex and do the number line ?

(2,-9)

Step-by-step explanation:

Set the quadratic equal to zero.

Factor

Set each of these factors to zero

and

and

Plot the midpoint of the two values.

So the middle term is 2 and the other terms are 5 and -1.

Now the vertex is

So the vertex is

(2,-9)

the 3rd on is correct

step-by-step explanation:

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step-by-step explanation: