January 11th, 2019, 05:23 PM  #1 
Member Joined: Jan 2019 From: tornto Posts: 48 Thanks: 0  help quadratic
5. Which of these quadratic functions has exactly one xintercept? A. y = x^2 âˆ’ 9 B. y = x^2 âˆ’ 6x + 9 C. y = x^2 âˆ’ 5x + 6 D. y = x^2 + x âˆ’ 6 A 2. What are the xintercepts of y = (x âˆ’ 2)(x + 5) ? A. (0, 2) and (0, 5) B. (0, 2) and (0, 5) C. (2, 0) and (5, 0) D. (2, 0) and (5, 0) D 2. Which of the following parabolas opens upward and appears narrower than y = âˆ’3x^2 + 2x âˆ’ 1 ? A. y = 4x^2 âˆ’ 2x âˆ’ 1 B. y = âˆ’4x^2 + 2x âˆ’ 1 C. y = x^2 + 4x D. y = âˆ’2x^2 + x + 3 C Are my answers correct or not? Thanks Guest Last edited by skipjack; January 11th, 2019 at 06:33 PM. 
January 11th, 2019, 06:34 PM  #2 
Global Moderator Joined: Dec 2006 Posts: 20,833 Thanks: 2161 
Your answer to 5 is incorrect. The correct answer is B. Your answer of D for 2 is correct. Your final answer of C is incorrect. The correct answer is A. You had posted 5 twice, so I removed the duplicate. 

Tags 
quadratic, quadric 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Quadratic help  Burtis  Algebra  1  February 25th, 2015 05:07 PM 
Quadratic Help  Alexis87  Algebra  1  October 28th, 2014 03:34 AM 
Quadratic  ChristinaScience  Algebra  8  December 12th, 2012 01:15 AM 
Quadratic Eqn  Alexis87  Algebra  3  September 16th, 2012 06:17 AM 
Quadratic Q  Kiranpreet  Algebra  2  August 23rd, 2008 11:49 AM 