Algebra Pre-Algebra and Basic Algebra Math Forum

 January 11th, 2019, 06:23 PM #1 Member   Joined: Jan 2019 From: tornto Posts: 48 Thanks: 0 help quadratic 5. Which of these quadratic functions has exactly one x-intercept? 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 x-intercepts 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 07:33 PM. January 11th, 2019, 07:34 PM #2 Global Moderator   Joined: Dec 2006 Posts: 21,128 Thanks: 2337 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. Thanks from ProofOfALifetime Tags quadratic, quadric Thread Tools Show Printable Version Email this Page Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Similar Threads Thread Thread Starter Forum Replies Last Post Burtis Algebra 1 February 25th, 2015 06:07 PM Alexis87 Algebra 1 October 28th, 2014 04:34 AM ChristinaScience Algebra 8 December 12th, 2012 02:15 AM Alexis87 Algebra 3 September 16th, 2012 07:17 AM Kiranpreet Algebra 2 August 23rd, 2008 12:49 PM

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