What is the vertex of the graph of this function

y= -(x-1)(x+3)

Vertex = (-1,4).

Step-by-step explanation:

Given equation is .

Now we need to find the vertex of the graph of given function .

To find that we can rewrite given function into vertex form

Now compar this equation with

we get: h=-1, k=4

Hence vertex is (h,k) or (-1,4).

answer:     true

step-by-step explanation: