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question : http://prntscr.com/nm27uw

 

 

my answer:

 

 Major vertices (1,−16), (1,10)  minor vertices:   (6,−3), (8,−3)  foci= 4.47

 May 8, 2019
 #1
avatar+100519 
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The center is  (1, - 3)

The major axis is along yand is 26 units long  .......the major vertices are correct  !!!!

The minor axis is along x and is 14 units long .....the minor vertices are

(1 - 7, -3)  = ( -6, -3)     and    ( 1 + 7, -3)  = (8, -3)

 

The focal length from the center  =  sqrt [ 169 - 49 ]  = sqrt [ 120 ]  = 2sqrt30) units

 

So....the foci  =  ( 1, -3 +2sqrt(30) )   and ( 1, - 3 - 2sqrt (30) )

 

Here's a graph :  https://www.desmos.com/calculator/gojbznlt3x

 

 

cool cool cool

 May 8, 2019
edited by CPhill  May 8, 2019
 #2
avatar+9 
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appreciated!!

 May 8, 2019

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