# What is the vertex of #y=-2x^2 - 8x + 9#?

##### 1 Answer

Dec 15, 2015

Vertex:

#### Explanation:

Our objective will be to convert the given equation into "vertex form":

Given

Extract the

Complete the square:

Re-write the

Convert the squared binomial into form

which is the vertex form with vertex at

graph{-2x^2-8x+9 [-16.13, 15.93, 6, 22.01]}