Question

What is the the vertex of `y = 7x^2 - 28x - 60`?

Answer 1

Vertex is `-14`

Explanation:

Given -

`y=7x^2-28x-60`

it is in the form `ax^2+bx+c`
In such case the vertex is `(-b)/2a`

Apply this to the given equation -

Vertex `=(-28)/2 xx 7=-2`