Completing the Square (Continued)

Question 1

What is the first step in writing f(x) = 3x2 + 6x – 8 in vertex form?

Revolt · Accepted Answer

Factor out 3 from the first two terms.

Question 2

✔ 372124

Revolt · Accepted Answer

3

Question 3

Write g(x) = 4x2 + 88x in vertex form. The function written in vertex form is g(x) = (x +11)2 + .

Revolt · Accepted Answer

Part 1: 4(x + 11)^2 - 484; Part 2: 4(x + 11)^2 - 484

Question 4

✔ (–3, –45), minimum(–3, 45), maximum(3, –45), minimum(3, 45), maximum

Revolt · Accepted Answer

(–3, –45), minimum

Question 5

Write p(x) = 21 + 24x + 6x2 in vertex form. p(x) = (x + )2 –

Revolt · Accepted Answer

6; p(x) = (x + )2 –: 6; p(x) = (x + )2 –: 2; p(x) = (x + )2 –: 3

Question 6

What is true about the transformation that was performed? Check all that apply.

Revolt · Accepted Answer

g(x) has an axis of symmetry at x = 3.; g(x) is shifted right 3 units from the graph of f(x).; g(x) is shifted up 4 units from the graph of f(x).

Question 7

x = –45✔ x = –3x = 3x = 45

Revolt · Accepted Answer

x = –3

Question 8

✔ 241224

Revolt · Accepted Answer

2

Completing the Square (Continued) Answers