Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and the Yahoo Answers website is now in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
Given the equation x2 − 14x + 2y2 + 45 = 0 find the foci, vertices, directrix, axis, and asymptotes, where app?
Given the equation x2 − 14x + 2y2 + 45 = 0
find the foci, vertices, directrix, axis, and asymptotes, where applicable.
Please, if anyone could go through how to get the right answer that would be awesome.
1 Answer
- ted sLv 77 years agoFavorite Answer
this is an ellipse....[ x² - 14 x + 49] + 2y² = 4---> [ x - 7]² / 4 + y² / 2 = 1 { standard form }
center ( 7 , 0 )...vertices of ( 7 ± 2 , 0 ) and ( 7 , 0 ± √2 )...axes x = 7 , y = 0..
a² = b² + c² ---> c² = 2----> foci are ( 7 ± √2 , 0 )...directrices are x = 7 ± 2 √2
now go to 'wikipedia.org ' , type in 'directrix of an ellipse'..and READ
