What is the vertex of y=-(x-4)(x+4)?
1 Answer
Dec 12, 2015
Vertex:
Explanation:
You are given the equation in a factor form. By setting both factors to zero you know the two roots.
The vertex is always exactly in between those two points so you can find where x is
You can see that if you graph the equation
graph{-(x-4)(x+4) [-57, 57, -28.5, 28.5]}
Now that you have x, just plug that into the equation and solve for y
So the vertex is