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100 points for $49 worth of Veritas practice GMATs FREE VERITAS PRACTICE GMAT EXAMS Earn 10 Points Per Post Earn 10 Points Per Thanks Earn 10 Points Per Upvote ## Circle (x-3)^2 + (y-1)^2 = 13 intersects the vertical axis tagged by: fskilnik@GMATH ##### This topic has 1 expert reply and 0 member replies ### GMAT/MBA Expert ## Circle (x-3)^2 + (y-1)^2 = 13 intersects the vertical axis ## Timer 00:00 ## Your Answer A B C D E ## Global Stats Difficult [GMATH practice question] Circle (x-3)^2 + (y-1)^2 = 13 intersects the vertical axis in two points which are p units apart. What is the value of p? (A) 1/2 (B) 1 (C) 2 (D) 3 (E) 4 Answer: __(E)__ _________________ Fabio Skilnik :: GMATH method creator ( Math for the GMAT) English-speakers :: https://www.gmath.net Portuguese-speakers :: https://www.gmath.com.br ### GMAT/MBA Expert GMAT Instructor Joined 09 Oct 2010 Posted: 1296 messages Followed by: 29 members Upvotes: 59 fskilnik wrote: [GMATH practice question] Circle (x-3)^2 + (y-1)^2 = 13 intersects the vertical axis in two points which are p units apart. What is the value of p? (A) 1/2 (B) 1 (C) 2 (D) 3 (E) 4 $? = p$ $\left\{ \begin{gathered} {\left( {x - 3} \right)^2} + {\left( {y - 1} \right)^2} = 13 \hfill \\ x = 0 \hfill \\ \end{gathered} \right.\,\,\,\,\,\,\, \Rightarrow \,\,\,\,\,{\left( {y - 1} \right)^2} = 4\,\,\,\,\, \Rightarrow \,\,\,\left\{ \begin{gathered} y - 1 = - 2 \hfill \\ \,\,\,\,\,{\text{OR}} \hfill \\ y - 1 = 2 \hfill \\ \end{gathered} \right.$ $\left\{ \begin{gathered} x = 0\,\,\,;\,\,\,y - 1 = - 2\,\,\,\,\,\,\,\, \Rightarrow \,\,\,\,\,\,{\text{point}}\,\,\,A = \,\,\left( {0, - 1} \right) \hfill \\ \,\,\,\,\,{\text{OR}} \hfill \\ x = 0\,\,\,;\,\,\,y - 1 = 2\,\,\,\,\,\,\,\, \Rightarrow \,\,\,\,\,\,{\text{point}}\,\,B = \left( {0,3} \right) \hfill \\ \end{gathered} \right.\,\,\,\,\,\,$ $? = p = {\text{dist}}\left( {A,B} \right) = 4$ This solution follows the notations and rationale taught in the GMATH method. Regards, fskilnik. _________________ Fabio Skilnik :: GMATH method creator ( Math for the GMAT) English-speakers :: https://www.gmath.net Portuguese-speakers :: https://www.gmath.com.br • 1 Hour Free BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • 5 Day FREE Trial Study Smarter, Not Harder Available with Beat the GMAT members only code • Magoosh Study with Magoosh GMAT prep Available with Beat the GMAT members only code • Free Practice Test & Review How would you score if you took the GMAT Available with Beat the GMAT members only code • FREE GMAT Exam Know how you'd score today for$0

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