### Home > CCA2 > Chapter 4 > Lesson 4.1.4 > Problem 4-54

4-54.

Given the parabola , complete parts (a) through (c) below. Homework Help ✎

Find the vertex by averaging the

*x*-intercepts.(4, −6)

Find the vertex by completing the square.

You will need +16 on the right side of the equation to complete the square.

Find the vertex of

using your method of choice.Use one of the methods from part (a) or part (b).